From Concept to Launch — Custom Web Apps Built Right.

Web App Development Company Space To Tech

A web application is not a website. A website delivers content — pages, text, images. A web application processes it. User accounts and transactions need to be managed. We also need real-time data and role-based access. Third-party integrations are important too. None of these things work on a static page.

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Trusted by global brands

We are a web app development company with eight years of building products that teams actually depend on — SaaS platforms, internal tools, eCommerce systems, and enterprise portals shipped across four continents

Our web app development services run from the first technical scoping call through to post-launch maintenance. If you are evaluating a web app development agency and want straight answers about what a build actually involves, here is what working with us looks like.

Web app development illustration

What You Can Expect at a Glance

8+

Years

building web applications and SaaS platforms — not a generalist shop that added development to a marketing service list.

120+

Web applications

35+

Developers

20+

Countries Served

What Does a Web App Development Company Actually Build?

A web app development company builds interactive software that runs on the internet, including web applications, SaaS platforms, PWAs, and backend systems. These solutions are designed to be secure, scalable, cloud-ready, and optimized for performance. After launch, ongoing maintenance and security updates ensure everything continues running smoothly.

  • Web Applications
  • SaaS Platforms
  • Progressive Web Apps
  • Backend Development
  • Cloud-Based Solutions
  • Security & Maintenance
Web application development

Website vs Web Application: The Difference Matters

A website is built to deliver content. A web application is built to process it — user accounts, transactions, real-time data, role-based access, and third-party integrations. The engineering underneath is fundamentally different.

Choosing a Web Application

A web application is the right choice when your users are primarily on desktop, when you need to ship without an app store submission cycle, or when your product requires complex workflows that a content site cannot support.

Web Apps vs Native Mobile Apps

For offline hardware access or app store discoverability, a mobile app is the better fit. Space To Tech also operates as a mobile app development company when the product requirements point that direction.

Ready to Build a High-Performance Web Application?

Build secure, scalable web applications with Space To Tech. Join our team and create innovative digital solutions.

Space To Tech team collaborating
Scalable Architecture
Secure Development
Agile Sprint Delivery
Post-Launch Support

Web App Development Services We Offer

Space To Tech builds secure, scalable, and high-performance web applications tailored to business goals, user needs, and long-term growth.

Custom Web App Development

Custom web app development starts with what your business process actually requires — not a template repurposed to fit. A custom web application is built around your data model, your user roles, and the integrations your operations depend on. This is the right approach when off-the-shelf products cannot support your workflows.

SaaS Platform Development

SaaS architecture is not just a web app with a subscription page bolted on. The decisions that matter come earlier: multi-tenancy model, billing integration, and role-based access that works across organisations. A SaaS platform needs infrastructure that scales with customer growth from day one.

Progressive Web App (PWA) Development

A progressive web app installs from a browser, works offline through service worker caching, and receives updates server-side without an app store submission cycle. Space To Tech builds PWAs using Workbox for caching, web app manifest configuration, and responsive layouts tuned for mobile-first usage.

Enterprise Web App Development

Enterprise web app development is a different problem from an MVP build. SSO with existing identity providers, MDM compatibility, role-based access with audit trail requirements, ERP and CRM integration via REST or SOAP, and performance under concurrent loads from large internal teams — these requirements shape architecture from the first sprint.

eCommerce Web Application Development

eCommerce web applications require payment gateway integration, inventory synchronisation, order management workflows, and checkout flows optimised for conversion. We build storefronts and admin dashboards that handle real transaction volume — not demo catalogues.

Backend & API Development

Modern web applications depend on robust backend systems. RESTful and GraphQL APIs, authentication layers, database design, and cloud deployment pipelines are built alongside the frontend so the full stack ships as one coherent product.

Custom Web App Development

Custom web app development starts with what your business process actually requires — not a template repurposed to fit. A custom web application is built around your data model, your user roles, and the integrations your operations depend on. This is the right approach when off-the-shelf products cannot support your workflows.

SaaS Platform Development

SaaS architecture is not just a web app with a subscription page bolted on. The decisions that matter come earlier: multi-tenancy model, billing integration, and role-based access that works across organisations. A SaaS platform needs infrastructure that scales with customer growth from day one.

Progressive Web App (PWA) Development

A progressive web app installs from a browser, works offline through service worker caching, and receives updates server-side without an app store submission cycle. Space To Tech builds PWAs using Workbox for caching, web app manifest configuration, and responsive layouts tuned for mobile-first usage.

Enterprise Web App Development

Enterprise web app development is a different problem from an MVP build. SSO with existing identity providers, MDM compatibility, role-based access with audit trail requirements, ERP and CRM integration via REST or SOAP, and performance under concurrent loads from large internal teams — these requirements shape architecture from the first sprint.

eCommerce Web Application Development

eCommerce web applications require payment gateway integration, inventory synchronisation, order management workflows, and checkout flows optimised for conversion. We build storefronts and admin dashboards that handle real transaction volume — not demo catalogues.

Backend & API Development

Modern web applications depend on robust backend systems. RESTful and GraphQL APIs, authentication layers, database design, and cloud deployment pipelines are built alongside the frontend so the full stack ships as one coherent product.

Why Businesses Outsource Web App Development to India

Lower development costs matter, but long-term success depends on process transparency, ownership protection, and predictable delivery.

01

The Cost Advantage

The rate gap is real. India-based senior web developers bill at $20–$45 per hour, while equivalent experience in the US or UK typically costs $100–$180 per hour. For a mid-complexity web application, that difference can amount to tens of thousands of dollars. For teams working within a defined budget, this is a major factor in development planning.

02

Process Matters More Than Rates

The rate is only the starting point. Web app outsourcing often fails because of process gaps: no sprint reviews, limited developer access, requirements filtered through non-technical account managers, and no escalation path when timelines slip. Cost savings alone rarely compensate for poor communication and weak project visibility.

03

Structured Delivery Approach

Space To Tech follows a sprint-based delivery model with direct access to the developers building the application. Teams receive shared staging environments, weekly product demonstrations, and written delivery summaries after every sprint. This structure keeps stakeholders informed and ensures progress remains visible throughout development.

04

Ownership, Security & Transparency

Space To Tech operates under NDA from day one, keeps codebases in client-owned repositories, and ensures hosting accounts remain under client control. As a web app development company in India that has shipped production applications for teams in the US, UK, UAE, and Australia, the ownership model is not a negotiation point—it is the default.

Web App Development Services for Teams Globally

Different markets tend to ask different questions. The technology stack often stays the same. Expectations rarely do.

World map

INDIA

India offers one of the largest web development talent pools globally — full-stack teams, payment gateway integration, and GST compliance logic built into fintech and SaaS platforms. For businesses outsourcing web app development, India combines delivery speed with the architecture depth that scalable web products demand.

Industries We Serve

Industry-specific web app development experience helps build solutions that align with real user needs, business goals, and market expectations.

FinTech & Payments

Real-time transaction dashboards, payment gateway integration, KYC flows, multi-currency SaaS platforms, PCI-DSS compliant architectures

Build Smarter Web Experiences with Our Team

We help startups and enterprises develop scalable web applications that combine performance, security, and reliability.

Hire Dedicated Web App Developers from India

Space To Tech offers three engagement models, each suited to a different type of product need.

Dedicated Web App Developer

One or more developers working exclusively on your project, following your sprint schedule, using your tooling, and available through your communication channels. Best for long-term web app builds and actively evolving roadmaps.

Flexible models. Complete transparency. Built for your success.

How Much Does Web App Development Cost?

This is usually one of the first questions clients ask. It should be. Budget discussions are far more productive when everyone starts with realistic expectations.

Simple Web App

Single function, basic UI, no auth

$5,000 – $12,000

MVP Web App

Core feature set, user auth, basic dashboard

$10,000 – $25,000

Mid-Complexity Web App

Multi-module, API integrations, roles

$20,000 – $50,000

SaaS Platform

Multi-tenant, billing, custom onboarding

$35,000 – $90,000+

Enterprise Web Application

ERP, compliance, custom infra

$60,000 – $150,000+

Progressive Web App (PWA)

Offline-ready, installable experience

$10,000 – $35,000

eCommerce Web Application

Catalog, cart, checkout, payments

$15,000 – $60,000

AI-Powered Web Application

Varies by model complexity

$25,000 – $80,000+

Dedicated Web App Developer

Monthly retainer

$2,500 – $6,500/month

Simple Web App

Single function, basic UI, no auth

$5,000 – $12,000

MVP Web App

Core feature set, user auth, basic dashboard

$10,000 – $25,000

Mid-Complexity Web App

Multi-module, API integrations, roles

$20,000 – $50,000

SaaS Platform

Multi-tenant, billing, custom onboarding

$35,000 – $90,000+

Enterprise Web Application

ERP, compliance, custom infra

$60,000 – $150,000+

Progressive Web App (PWA)

Offline-ready, installable experience

$10,000 – $35,000

eCommerce Web Application

Catalog, cart, checkout, payments

$15,000 – $60,000

AI-Powered Web Application

Varies by model complexity

$25,000 – $80,000+

Dedicated Web App Developer

Monthly retainer

$2,500 – $6,500/month
AI development cost insight

AI Development Insight

Most production AI features rely on API integrations rather than custom model training, making implementation more affordable than many businesses expect.

Dedicated Developer Retainer

$2,500–$6,500/month

US & UK Development Rates

$100–$180/hour

Progressive Web App Publishing & Launch

PWA publishing is not the same as deploying a web application. It requires a service worker with a caching strategy matched to actual usage — static assets cached aggressively, API responses handled with stale-while-revalidate or network-first patterns depending on data freshness requirements. The web app manifest needs separate configuration for Chrome on Android and Safari on iOS, which handle install behaviour differently.

Progressive Web App essentials and install experience

Space To Tech Handles the Full PWA Launch Stack

Workbox Caching

Strategic caching with Workbox for static assets and API responses.

Manifest Setup

Optimized manifests for Chrome (Android) and Safari (iOS).

Push Notifications

Integrated push notifications to re-engage and retain users.

Lighthouse Benchmarking

Performance, accessibility, best practices and SEO verified before launch.

Go-Live Ready

Final checks, build optimization and smooth deployment.

Clutch 5.0 rating

Recognized. Trusted. Preferred

Awards & Recognition

We are proud to be recognized by leading platforms and industry experts for our innovation, impact, and excellence

TopDevelopers

TopDevelopers

Top Mobile App Developers

Freelancer

Freelancer

Top Mobile App Developers

AppFutura

AppFutura

Top Mobile App Developers

GoodFirms

GoodFirms

Top Mobile App Development

Clutch

Clutch

Top Mobile App Developers

Excellence isn't claimed.It's recognized

These achievements reflect our commitment to
delivering world-class AI solutions that help
businesses grow and lead

FAQs

A web app development company builds custom web applications — SaaS platforms, dashboards, portals, and eCommerce tools — handling frontend, backend, API integration, deployment, and post-launch support. Space To Tech manages the full lifecycle from architecture and development through launch and ongoing maintenance.
A website delivers content — pages, text, and images. A web app processes data and enables user interactions such as accounts, transactions, real-time features, and role-based access. The architecture is fundamentally different, with web apps requiring backend logic, databases, and API layers that static websites do not.
Web app development cost in India ranges from $5,000 for a simple web app to $150,000+ for enterprise platforms. India-based rates run $20–$45 per hour compared with $100–$180 per hour in the US and UK. Feature complexity, integrations, and architecture are the main variables that determine where a project lands in these ranges.
A Progressive Web App (PWA) is a web app built with service workers and a manifest file so it installs like a native app and works offline. PWAs are best when App Store submission friction and update cycles are a problem — you get installable, app-like behaviour without going through Apple or Google review processes.
A simple web app typically takes 6–10 weeks. Mid-complexity products need 12–20 weeks. A full SaaS platform or enterprise app often requires 24–40 weeks. Complexity, integrations, and design scope are the main timeline variables.
Space To Tech uses React and Next.js on the frontend; Node.js, Python, or Laravel on the backend; PostgreSQL or MongoDB for data; and AWS or GCP for cloud infrastructure. Stack choice depends on project requirements — we select the right combination based on scalability, performance, and your team's existing tooling.
Yes. Space To Tech offers dedicated developer, team augmentation, and project-based engagement models. Engagements include sprint reviews, NDA protection, full codebase ownership, and hosting access retained by you as the client.
Yes. Space To Tech builds web apps with AI features including recommendation engines, NLP-driven interfaces, document analysis tools, and AI-assisted workflow automation. Costs vary by whether the project uses external APIs or custom-trained models.
We build web apps for FinTech, eCommerce, healthcare, logistics, EdTech, SaaS, real estate, HR, travel, legal, gaming, and enterprise tools — delivering projects for clients across 20+ countries.
Build a web app when your product is used primarily on desktop or when you want to avoid app store submission and update cycles. Build native mobile when offline access, device hardware, or App Store discoverability are core to the product.

Supporting Insights

React Native security layered protection illustration for enterprise mobile apps
Blogs12/07/2026

React Native Security: 15 Best Practices to Build Secure Enterprise Apps

React Native security is the practice of protecting an app's data, authentication, and code from theft, tampering, and interception across the JavaScript bridge, native modules, and network layer. For any team building a secure React Native app for enterprise users, security is not a single feature you bolt on before launch. It is a set of layered decisions made across storage, authentication, network calls, and code protection.This guide walks through what React Native app security actually means, the most common risks enterprise teams run into, and a complete framework of React Native security best practices you can apply today, whether you are technical or leading the business side of a mobile project. What Is React Native Security? React Native security is the set of practices that protect user data, authentication credentials, and app logic across the JavaScript bridge, native modules, and network layer of a React Native application. It combines secure storage, encrypted network communication, code hardening, and dependency management into one layered defense. Security in React Native is not a plugin you install once. It is an ongoing discipline that touches how you store tokens, how you talk to your APIs, how you ship updates, and how carefully you vet the open source packages your app depends on. Because React Native blends JavaScript with native iOS and Android code, this discipline looks a little different from securing a purely native app, which is exactly why enterprise teams benefit from a dedicated approach rather than borrowing a native security checklist wholesale. If you are earlier in the process and still evaluating the framework itself, our React Native app development guide covers the fundamentals end to end. This article picks up from there and focuses specifically on how to secure what you build.  Why React Native Security Matters for Enterprise Apps React Native app security stops being a developer-only concern the moment your app starts handling real user data, payments, or business logic that a competitor would love to see. For enterprise decision makers, weak security carries four kinds of cost: Data breaches that expose customer PII, credentials, or financial details, often triggering mandatory disclosure obligations and lasting reputational damage. Compliance exposure. Regulated industries such as finance, healthcare, and HR tech face GDPR, HIPAA, or PCI-DSS obligations that a single insecure endpoint or unencrypted data store can violate. Erosion of user trust. Users rarely forgive a breach, and mobile apps live or die by repeat usage and word of mouth. Direct financial risk from incident response, legal exposure, and lost business, on top of the engineering time spent fixing the issue after the fact rather than before launch. None of this is unique to React Native. What is unique is that its cross-platform nature means a single vulnerability, say an unencrypted AsyncStorage call, ships to both iOS and Android at once. That is the tradeoff of a shared codebase: faster delivery, but also faster propagation of any security gap. How React Native's Architecture Creates Unique Security Considerations To understand why React Native needs its own security lens, it helps to understand how the framework works under the hood. Our React Native architecture explained guide covers this in depth, but the short version is that React Native connects a JavaScript thread to native iOS and Android modules through a bridge, or in the New Architecture, through JSI, the JavaScript Interface. This bridge is powerful because it lets one JavaScript codebase drive native UI and native capabilities on both platforms. It also means the app's attack surface includes three layers instead of one: the JavaScript bundle itself, which can be extracted and inspected, the native modules it talks to, and the growing list of third-party npm packages most React Native apps depend on. Securing a React Native app for enterprise use means addressing all three layers, not just the parts a native iOS or Android developer would traditionally worry about. Common React Native Security Risks and Vulnerabilities Before getting into best practices, it is worth naming the recurring risks that show up across React Native codebases. Building a secure React Native app starts with knowing what you are defending against: Reverse engineering of the JavaScript bundle. Without protection, an attacker can extract and read an app's JS bundle, exposing business logic, hardcoded keys, and API endpoints. Insecure local storage. Storing tokens, passwords, or personal data in plain, unencrypted storage is one of the most common React Native security issues found in audits. Weak authentication and session handling. Missing multi-factor authentication, long-lived tokens, or predictable session identifiers all widen the door for account takeover. Insecure API communication. Skipping certificate pinning or relying on plain HTTP instead of properly configured HTTPS leaves data exposed in transit. Dependency and supply-chain risk. React Native apps often pull in dozens of npm packages, and one outdated or malicious dependency can introduce a React Native security vulnerability without a single line of your own code changing. Each of these maps to a well-documented category in the OWASP Mobile Top 10, which this guide returns to shortly. React Native Security Best Practices: A Complete Framework Building a secure React Native app comes down to applying the following React Native security best practices consistently, not just at launch, but through every release. Whether you are evaluating a vendor's approach, or reviewing your own team's checklist for a fast-moving product (including teams exploring React Native for startups who still cannot afford to cut corners on security), these nine areas cover the full stack. 1. Secure Authentication and Authorization Authentication is usually the first thing attackers probe. Use OAuth 2.0 with PKCE (Proof Key for Code Exchange) rather than the older implicit grant flow, which is no longer considered safe for mobile apps. Libraries like react-native-app-auth wrap the native AppAuth SDKs for iOS and Android and support PKCE out of the box. Pair this with short-lived JWT access tokens, commonly around 15 minutes, and longer-lived refresh tokens that rotate on every use, so a leaked token has a limited window of usefulness. Add biometric authentication such as Face ID, Touch ID, or fingerprint as a second factor using react-native-biometrics or expo-local-authentication, and enforce role-based authorization on the server so a compromised client cannot simply request data it should not see. 2. React Native Secure Storage React Native secure storage is one of the most misunderstood areas of the framework. According to the official React Native documentation , Async Storage, the default key-value store bundled with most React Native apps, is unencrypted by design. It is fine for non-sensitive preferences, but it should never hold tokens, passwords, or personal data, a point worth trusting since it comes straight from the framework's own maintainers rather than a third-party blog. For anything sensitive, use react-native-keychain or expo-secure-store, which write to the iOS Keychain and Android Keystore respectively, both hardware-backed and encrypted by the operating system. For larger datasets, such as an offline database, SQLCipher provides transparent 256-bit AES encryption. The rule of thumb: if losing this data would embarrass you or hurt a user, it does not belong in plain AsyncStorage. 3. Network and API Security Every API call an app makes should run over HTTPS, but HTTPS alone is not enough. Certificate pinning, or better, public-key pinning using the SPKI hash, restricts an app to trust only its own server's certificate, so even if an attacker installs a rogue root certificate on a device, a pinned app refuses the connection. Layer in API request signing, such as HMAC-SHA256 with a timestamp and nonce, to prevent replay attacks, and validate every API response against a schema on the client using a library like zod, so a compromised or spoofed API cannot quietly inject malicious data into the app. 4. Code Protection Against Reverse Engineering Because the JavaScript bundle can be extracted from any installed app, protecting it matters. Enable Hermes, React Native's JavaScript engine and the default since version 0.70, which compiles JS to bytecode rather than shipping plain, readable JavaScript. On Android, enable ProGuard or R8 to minify and obfuscate native Java and Kotlin code, and confirm Metro bundle minification is switched on for production builds. For an extra layer, javascript-obfuscator can add string encryption and control-flow flattening to the bundle. None of this makes reverse engineering impossible, but it raises the cost and time required enough to deter casual attackers, and genuine secrets should still live on the server regardless of how well the client is obfuscated. 5. Root and Jailbreak Detection A rooted Android device or a jailbroken iPhone gives an attacker, or sometimes the device owner, far more access to an app's storage and memory than the OS normally allows. Libraries such as react-native-jail-monkey can detect this state at runtime. What you do with that information depends on the app's risk profile. A banking or healthcare app might block access entirely on a compromised device, while a lower-risk consumer app might simply show a warning or log the event for fraud analysis. There is a genuine UX tradeoff here, since some users root their devices for legitimate reasons, so it is worth defining a clear policy rather than defaulting to an outright ban. 6. Secure Deep Linking and WebView Handling Deep links make navigation smoother, but they can also be intercepted or spoofed by another app registered for the same URL scheme, potentially exposing authentication tokens or routing a user to an unintended screen. Validate any data arriving through a deep link before acting on it, and avoid passing sensitive tokens directly in a link's query parameters. If the app uses WebViews, treat them as untrusted by default. Restrict which domains they can load, disable JavaScript execution where it is not needed, and never inject app secrets into a WebView's context. 7. Third-Party Dependency and Supply-Chain Security Most React Native apps depend on dozens, sometimes hundreds, of npm packages, and each one is a potential entry point. Use software composition analysis tooling to flag known vulnerabilities in the dependency tree, and review a package's maintenance history, community size, and how it handles sensitive data before adding it to a production app. Keep dependencies patched on a regular cadence rather than letting them drift for months. A large share of real-world mobile security incidents trace back to a known, already-patched vulnerability in an outdated library rather than a novel attack technique. 8. Secure CI/CD and OTA Update Pipelines Over-the-air updates through CodePush or EAS Update let a team ship JavaScript changes without a full app store review, which is convenient and also a serious attack surface if left unprotected. Only accept signed updates from your own backend or the official update endpoint, and verify the signature before applying anything. Restrict who on the team can publish an update, use HTTPS and certificate pinning on the update endpoint itself, and keep an audit trail of every release. Treat the OTA pipeline as a privileged system, since an attacker who compromises it can push malicious code straight to the entire user base without ever going through app store review. 9. Session Management and Secure Logout When a user logs out, make sure the app actually clears locally stored tokens and cached personal data rather than just hiding the login screen. If a device is later shared or resold without a factory reset, leftover session data can expose the previous user's account. On Android specifically, be aware that the App Auto Backup feature can quietly back up app data to a user's Google Drive account, including data assumed to stay on-device. Either exclude sensitive files from backup or encrypt them, so a backup copy is never equivalent to a security hole. React Native Security and the OWASP Mobile Top 10 There is no need to invent a security framework from scratch. The OWASP Mobile Top 10 , maintained by the Open Web Application Security Project, a nonprofit whose lists are already used as a baseline by many enterprise security teams, gives a well-tested view of the most critical mobile risks. Mapping it to React Native makes it easier to see where each best practice above actually applies. OWASP Mobile Risk Category How It Shows Up in React Native Covered In Improper Credential Usage Hardcoded API keys or secrets in the JS bundle, weak token handling Secure Authentication and Authorization Insecure Data Storage Sensitive data left unencrypted in AsyncStorage React Native Secure Storage Insufficient Transport Layer Protection Missing HTTPS/TLS or no certificate pinning Network and API Security Insecure Authentication No MFA, weak session handling, implicit OAuth grant misuse Secure Authentication and Authorization Insufficient Cryptography Weak or custom encryption instead of platform-standard libraries React Native Secure Storage Client Code Quality and Code Tampering Unobfuscated JS bundle, no root or jailbreak detection Code Protection Against Reverse Engineering Insecure Data via Deep Links Deep links exposing tokens or sensitive routes Secure Deep Linking and WebView Handling Use of Components with Known Vulnerabilities Outdated or unpatched npm dependencies Third-Party Dependency and Supply-Chain Security React Native Security Checklist Use this React Native security checklist before any major release. It is designed to be shared with a team or turned directly into sprint tickets. Store all tokens, passwords, and personal data in Keychain/Keystore, never in plain AsyncStorage. Enforce HTTPS everywhere and add certificate or public-key pinning on every API call. Use OAuth 2.0 with PKCE and short-lived, rotating JWT tokens. Add biometric authentication as a second factor for sensitive actions. Enable Hermes, ProGuard/R8, and Metro minification for every production build. Run root and jailbreak detection and define a clear response policy. Validate deep link data before acting on it, and sandbox WebViews to trusted domains only. Run software composition analysis on dependencies and patch on a fixed cadence. Sign and verify every OTA/CodePush or EAS update, and restrict who can publish. Clear local tokens and cached data on logout, and account for Android Auto Backup exposure. Map current coverage against the OWASP Mobile Top 10 before each major release. Schedule a penetration test at least annually, and after any payment or compliance-sensitive feature ships. React Native Security Tools and Libraries at a Glance A quick reference for the libraries mentioned throughout this guide, so you do not have to hunt back through each section. Tool / Library What It Secures Platform react-native-keychain Encrypted credential storage via iOS Keychain / Android Keystore iOS + Android expo-secure-store Encrypted key-value storage for Expo-managed apps iOS + Android react-native-app-auth OAuth 2.0 + PKCE native authentication flows iOS + Android react-native-ssl-pinning Certificate/public-key pinning to block MITM attacks iOS + Android react-native-jail-monkey Root and jailbreak / compromised-device detection iOS + Android javascript-obfuscator JS bundle obfuscation (string encryption, control-flow flattening) Build-time, cross-platform SQLCipher 256-bit AES encryption for local SQLite databases iOS + Android Hermes (built-in) Compiles JS to bytecode, harder to decompile than plain JS Default on RN 0.70+ Common React Native Security Mistakes to Avoid Hardcoding API keys or secrets directly in the JavaScript source, where they can be extracted from the bundle. Storing tokens or passwords in AsyncStorage without encryption. Skipping SSL or certificate pinning because it feels like extra setup work. Letting dependencies drift for months without checking for known vulnerabilities. Failing to clear local data on logout, leaving the next user of a shared device exposed. Relying on obfuscation alone instead of moving real secrets to the server. How Often Should a React Native App Undergo a Security Audit? Run automated dependency and static-analysis scans on a quarterly basis at minimum, since new vulnerabilities in existing packages are disclosed constantly. Schedule a full penetration test before any major release and at least once a year regardless of release cadence. Outside that regular schedule, trigger an additional audit whenever the app adds a payment feature, takes on a new compliance requirement, or shortly after any security incident, even a minor one. Treating an audit as a one-time, pre-launch checkbox is one of the more common ways enterprise teams end up with an outdated security posture within a year of shipping. Are React Native Apps Secure for Enterprise Use? Yes, when the practices above are actually implemented and maintained. Security in React Native depends far more on implementation choices than on the framework itself. A well-secured React Native app, with encrypted storage, pinned network calls, hardened code, and a maintained dependency tree, holds up just as well as a comparable native app for most enterprise use cases. Where React Native genuinely differs from native development is the shared codebase across iOS and Android, which means a security gap can propagate to both platforms at once, but also means a fix reaches both platforms at once too. For enterprise teams, the practical takeaway is to treat security as a release-gate requirement, not an afterthought, regardless of which framework sits underneath the app. Final Thoughts React Native security is not a single setting to switch on. It is a layered practice across storage, authentication, network calls, code protection, dependencies, and release pipelines, applied consistently from the first sprint through every update after launch. Teams that treat it this way build apps that hold up under real scrutiny, not just at launch, but a year and a dozen releases later. If you are planning a new build or reviewing an existing app's security posture, our team can walk through this checklist against your specific codebase. Our engineers regularly hire and pair with React Native developers who bring this exact framework into client projects from day one, and it is part of how we approach every app we build as a mobile app development company .

React Native Migration Guide cover image showing migration from the legacy Bridge architecture to the new React Native Architecture with a direct high-speed connection illustration.
Blogs07/07/2026

React Native Migration Guide: Upgrade to the New Architecture Step by Step

If you already have a React Native app in production, “React Native migration” probably means something different to you than it does to a team that has not touched React Native yet. This guide is about the second kind of migration: moving an existing React Native app from the old bridge-based architecture to the New Architecture, not rewriting a native iOS or Android app in React Native from scratch. If it is the framework decision itself you are still weighing, our React Native app development guide is the better starting point. Meta stopped investing in the old bridge starting with React Native 0.80, released in June 2025, which means every app still running on the legacy architecture is now on borrowed time. This guide walks through what the New Architecture actually changes, a readiness checklist, the migration steps in order, a realistic timeline, and the mistakes that trip up most teams, so you can plan the upgrade with a clear head instead of guessing your way through it. What Is React Native's New Architecture? The New Architecture is not one feature. It rebuilds four core parts of React Native: TurboModules, the new way native modules load; Fabric, the new renderer; a rebuilt event loop; and the removal of the old asynchronous bridge in favor of a direct JavaScript-to-native interface called JSI. For a full breakdown of how these pieces fit together, see our article on how React Native's architecture works under the hood . In practice, this shows up as faster app startup, fewer dropped frames during scrolling and animation, and fewer crashes caused by type mismatches between JavaScript and native code, since JSI checks types at the boundary instead of serializing everything into bridge messages first. The rest of this guide is narrower and more practical: how to move an existing app from the old architecture to this one without breaking production along the way. Should You Migrate Now? According to React Native's official engineering blog, the New Architecture became the default for every new app starting with React Native 0.76, released in October 2024. That alone would make migration worth planning. What pushes it closer to necessary is what happened afterward: Meta's 0.80 release in June 2025 froze further investment in the legacy architecture, so bug fixes, performance work, and new features stopped going into the old bridge. If you are also reconsidering whether React Native is still the right framework for your app, that is a separate decision with its own tradeoffs, not something to fold into an architecture upgrade. Our comparisons on React Native vs Flutter and React Native vs a fully native rebuild are better starting points for that question. This guide assumes you are staying on React Native and simply need to move off the old bridge. Scenario Recommendation New app / greenfield project Start directly on the New Architecture. There is no good reason to build new on the legacy bridge. Running RN 0.81 or earlier Plan the upgrade soon. Legacy architecture investment stopped from 0.80 onward. Already on RN 0.82+ You are likely already on the New Architecture by default. Audit for full library compatibility. Large app with many custom native modules Run a compatibility audit before committing to a migration timeline. React Native Migration Timeline A few version numbers explain most of the urgency in this guide. Here is how the New Architecture rollout has actually progressed: Version Milestone 0.76 (Oct 2024) New Architecture enabled by default for new apps, with an interop layer for backward compatibility. 0.80 (Jun 2025) Legacy architecture officially frozen. No further feature investment on the old bridge. 0.82 (Oct 2025) Framework described by the React Native team as a new era for the platform. 0.86 (current, Jun 2026) Latest stable release, and the baseline version referenced throughout this guide. Migration Readiness Checklist Before you touch a single config file, confirm where you actually stand on each of these: Current React Native version Expo SDK version, if you are on Expo Third-party library compatibility, checked against reactnative.directory Custom Native Modules inventory Custom Native Components inventory Android build configuration (Gradle, NDK) iOS build configuration (CocoaPods, Xcodebuild) CI/CD pipeline compatibility Crash reporting and analytics SDK compatibility Most teams assume app size predicts how hard this will be. It does not. Library and native module compatibility predicts it. A small app with two unmaintained native modules can take longer than a mid-size app built entirely on popular, well-maintained libraries. How to Migrate Step by Step Step 1: Update Your React Native Version Start by checking exactly what changes between your current version and the one you are targeting, file by file, rather than upgrading blind. While this guide focuses on migration planning, compatibility checks, and implementation best practices, always cross-check version-specific commands and breaking changes against the official React Native upgrade documentation before touching a production app. Step 2: Enable the New Architecture On Android, this is a flag in gradle.properties: newArchEnabled=true On iOS, install pods with the New Architecture flag set: RCT_NEW_ARCH_ENABLED=1 bundle exec pod install Do this on a branch, not on main. The next few steps are where most of the actual work happens. Step 3: Update Dependencies Cross-check every third-party library your app actually uses against reactnative.directory before upgrading. Flag anything that still relies on the legacy bridge only and has no New Architecture support planned. This step, more than any other, determines your real timeline. Step 4: Run Codegen Codegen generates the type-safe native interface code from your JavaScript specs, which is what lets JSI catch type mismatches at the boundary instead of at runtime. You do not need to hand-write this layer. Run it, review the generated output for anything unexpected, and commit it alongside your code. Step 5: Migrate Native Modules and Native Components This is usually the slowest step, and the one where outside help pays off fastest if your team has not done a TurboModules migration before. If you need extra hands for this part specifically, it is worth talking to a team that has done this migration before rather than learning the TurboModule spec under a deadline. Our page on how to hire React Native developers walks through what to look for. Step 6: Test Android and iOS Separately New Architecture bugs surface differently per platform. Do not treat a passing Android build as a signal that iOS is fine, or the other way around. Run your full test suite on both, and manually test any screen that uses a custom native module or component. Step 7: Validate Performance Before you call the migration done, benchmark three things against your pre-migration baseline: cold start time, frame drops during list scrolling, and memory usage under normal use. If any of these got worse, it usually traces back to a library still running through the interop layer instead of natively on Fabric. Common Migration Issues Issue Cause Solution App crashes on startup after enabling the New Architecture A dependency still assumes the legacy bridge only Check the library on reactnative.directory; update it or fall back to the interop layer temporarily  Custom Native Module not found Module was never migrated to the TurboModule spec Follow the official Native Modules migration guide and regenerate with Codegen Build fails on iOS after pod install CocoaPods cache or Podfile.lock mismatch Clean Pods and derived data, then reinstall with RCT_NEW_ARCH_ENABLED=1 Custom component not rendering correctly Known limitation of the interop layer for that component type Migrate the component to a Fabric Native Component directly Migration Risk Assessment How risky your migration is depends far more on your native code footprint than on your app's feature count. If you are running a newer product with a small codebase, this whole process tends to be short; our notes on React Native for early-stage products cover why lean teams often have the easiest path here. Risk Level Typical Profile Low Small app, few or no custom native modules, mostly popular, well-maintained libraries Medium Mid-size app, a handful of custom native modules, some libraries still migrating High Enterprise app, heavy custom native code, legacy dependencies with little or no maintenance Time Estimation These ranges assume a compatibility audit has already happened. If it has not, add time for that first. For a fuller picture of what a migration or upgrade project typically costs alongside developer time, see our breakdown of React Native app development cost . App Size Typical Timeline Small app 2 to 4 days Medium app 1 to 2 weeks Enterprise app 4 to 8 weeks Rollback Plan Very few migration guides mention this, which is exactly why it gets skipped and then regretted. Keep the legacy architecture flag reachable during a transition window instead of deleting it the moment you flip to the new one. Roll the change out behind a staged release rather than to every user at once, and watch crash rates and performance metrics closely before you commit fully. If something regresses, you want a flag to flip back, not a git revert under pressure. Post-Migration Checklist Android build verified on real devices, not just emulator iOS build verified on real devices, not just simulator CI pipeline updated for the New Architecture build flags Crash reporting confirmed working under the new setup Performance benchmarks compared against your pre-migration baseline Analytics events verified end to end Final Thoughts The New Architecture migration is rarely about difficulty. It is about sequencing: audit first, update dependencies before you flip the flag, and test both platforms separately instead of assuming a green Android build means iOS is fine too. Teams that treat this as a one-afternoon flag change are usually the ones who end up rolling it back. If you would rather hand this off to a team that has already run this migration on production apps, SpaceToTech's custom React Native app development services can take it from audit through to a validated release.

React Native Architecture Explained — JSI, Fabric, TurboModules, and Hermes 2026 guide
Blogs05/07/2026

React Native Architecture Explained: JSI, Fabric, TurboModules & the New Architecture (2026 Guide)

Most teams pick React Native for the obvious reason: one codebase, two platforms, faster shipping. Fewer teams stop to ask how the framework actually gets JavaScript to talk to native iOS and Android code underneath. That gap rarely matters until it does: a scroll that stutters, a cold start that feels heavier than it should, a third-party library that suddenly won't build. Almost every one of those problems traces back to architecture. This guide breaks down how React Native's engine actually works in 2026, from the original Bridge to the JSI-powered New Architecture that has now fully replaced it. If you're evaluating React Native for a build, hiring for one, or trying to understand why your app behaves the way it does, this is the layer worth understanding. For the bigger picture on planning and building a full React Native product. What Is React Native Architecture? React Native architecture describes how JavaScript code you write communicates with the native iOS and Android layers that actually render pixels on screen, access the camera, or read from device storage. Conceptually, there are three layers: your JavaScript code and React components, a communication layer that passes instructions and data across the JS/native boundary, and the native layer itself, made of platform APIs and UI components. How that middle layer works has changed dramatically since React Native launched in 2015. For a decade, it ran on something called the Bridge. As of 2026, the Bridge is gone entirely, replaced by a faster, synchronous system built on JSI. Understanding both versions, and why the switch happened, explains most of what makes a React Native app feel fast or feel sluggish. The Old Architecture: How the Bridge Worked (and Why It Broke Down) The original React Native architecture ran on three separate threads: a JavaScript thread running your React code, a native or UI thread responsible for actually drawing views, and a shadow thread that calculated layout. None of these threads could talk to each other directly. Instead, every instruction passed through the Bridge, an asynchronous, JSON-serializing message queue. Here's what happened, step by step, every time your code called setState(): React's reconciler diffed the virtual DOM on the JS thread, the UIManager generated a list of view mutations, those mutations were serialized into a JSON string, the JSON was posted to the async message queue, the native side deserialized it, the C++ shadow tree updated, Yoga calculated the flexbox layout, and finally the native view was drawn on screen. That's two full Bridge crossings just to update one piece of state. For simple apps, this was invisible. For anything complex, it wasn't. A long list scrolling meant hundreds of these round trips per second, each one paying the serialization cost again. Animations dropped frames because the JS thread couldn't guarantee when the native side would actually receive an update. There was no way to measure a native view's layout synchronously, which made certain interactions, like a text input that needs to know its own height mid-render, awkward or impossible to build cleanly. Component Old Architecture Communication Async Bridge, JSON serialization Native Modules Eagerly loaded at startup, even unused ones Renderer UIManager (asynchronous) Type Safety None enforced at the JS–native boundary Typical Failure Mode Serialization bottleneck, dropped frames on complex UI The Bridge worked well enough that companies like Shopify, Discord, and Microsoft Teams built serious production apps on it. But as those apps scaled, the Bridge's fundamental design became a ceiling the team couldn't build past. That's what the New Architecture was built to remove. The New Architecture: JSI, Fabric, TurboModules & Codegen The New Architecture replaces the Bridge with four connected pieces: JSI, Fabric, TurboModules, and Codegen. Together, they eliminate the async JSON bridge and let JavaScript and native code communicate directly. JSI (JavaScript Interface) JSI is the foundation everything else is built on. It's a lightweight C++ layer that lets JavaScript hold a direct reference to a native object, and vice versa. There's no JSON to serialize, no message queue to wait on, and no guessing when a message will arrive. A JS function can call a native method synchronously and get a result back immediately, the same way it would call any other JavaScript function. This single change is what unlocked everything that followed. Fabric Renderer & the Shadow Tree Fabric replaces the old UIManager as React Native's renderer. It's built directly on JSI, which means layout can now be measured synchronously instead of waiting on an async round trip. Fabric maintains the shadow tree in C++ rather than passing it back and forth across the Bridge, and Yoga still handles the actual flexbox layout math on top of it. Because Fabric is JSI-based, it also supports React 18 features like Suspense and transitions, and it enables automatic batching, which reduces unnecessary re-renders during rapid state updates. According to the official React Native architecture documentation , the New Architecture was built specifically to bring these concurrent rendering features to native apps. TurboModules TurboModules replace the old NativeModules system. Under the Bridge, every native module your app used, whether it was called on screen one or never at all, was loaded eagerly at app startup. TurboModules load lazily, only when JavaScript first references them. For an app with dozens of native integrations, that alone meaningfully cuts cold start time. Codegen & Type Safety Codegen reads TypeScript or Flow specification files and generates the native interface code, C++, Objective-C++, and Kotlin, automatically. If your native implementation returns the wrong type or drops a field the spec defines, the native build fails immediately instead of crashing in production weeks later. This moves an entire category of bugs from runtime to build time, something the old NativeModules system had no equivalent for. Hermes Engine Hermes is React Native's JavaScript engine, purpose-built for mobile. It compiles JavaScript to bytecode ahead of time rather than parsing and compiling on every app launch, which improves startup time and reduces memory usage. Under the New Architecture, Hermes isn't an optional performance toggle anymore. JSI depends on capabilities that only Hermes provides, which makes it a hard requirement rather than a recommendation. Dimension  Old Architecture (Bridge) New Architecture (JSI/Fabric) Communication Asynchronous, JSON-serialized Synchronous, direct C++ references Native Module Loading Eager, at startup Lazy, on first use via TurboModules Type Safety Runtime only Build-time, via Codegen Rendering UIManager, async layout Fabric, synchronous layout, Shadow Tree React 18 Features Not supported Fully supported Status in 2026 Removed as of RN 0.82 Default and only supported architecture The 2026 Update: The Legacy Bridge Is Now Fully Removed Most articles on this topic still describe the New Architecture as something React Native apps are “moving toward.” That's out of date. As of 2026, the transition is over. React Native 0.76, released in late 2024, made the New Architecture the default for new projects. React Native 0.81 and Expo SDK 54 were the last versions offering a legacy interop path for apps that hadn't migrated yet. Then React Native 0.82 removed the old Bridge entirely. Setting newArchEnabled=false in your build configuration is now simply ignored, there's no path back to the legacy system. More recently, React Native 0.86, released in June 2026, went a step further: every new project starts fully bridgeless by default, with the Strict TypeScript API generating types directly from source code via Codegen rather than hand-maintained type definitions. The practical implication is straightforward. Any team still running an app built before 0.82 is sitting on a hard upgrade ceiling, not a future decision. Any third-party library that hasn't migrated to support TurboModules and Fabric is now a genuine adoption risk, not a wait-and-see situation. If you're planning a new build or evaluating an existing codebase in 2026, the New Architecture isn't a checkbox anymore. It's simply what React Native is, which is also why it's worth working with a team that builds on it by default rather than treating it as a migration project. Our React Native app development services start from the New Architecture as the baseline, not the destination. How Data Moves Through the New Architecture It's worth tracing the same setState() call from earlier, this time through JSI and Fabric, to see the actual difference. Your JSX describes an element tree in JavaScript. That tree is passed through JSI directly, with no serialization step, to update the C++ shadow tree. Yoga calculates the resulting layout on that same shadow tree. Fabric then mounts or updates the real native views to match, and the frame is drawn. Compare that to the old flow: React reconciles, JSON is packed, the async queue delivers it, native deserializes, the shadow tree updates, Yoga runs, and only then does a view get drawn. The New Architecture removes two full serialization steps and the uncertainty of an async queue in between. That's the entire performance story in one comparison: fewer hops, no JSON, and layout that can be measured synchronously instead of guessed at. Nitro Modules: The Next Layer Beyond TurboModules Nitro Modules, introduced in 2025, push the same idea one step further than TurboModules. Where TurboModules still route through a defined native module interface, Nitro Modules generate near-zero-overhead JSI bindings directly, cutting out even more of the abstraction between JavaScript and native code. They're not yet the default the way Fabric and TurboModules are, but they're a strong signal of where the framework is heading: less abstraction, more direct native access, without giving up React Native's shared codebase model. Code-Level Architecture Patterns Runtime architecture is only half the picture. How you organize your own code matters just as much for a project's long-term health. Two patterns show up repeatedly in serious React Native codebases: Clean Architecture, which separates business logic from UI and framework code so your core logic doesn't depend on React Native itself, and Modular Architecture, which splits an app into self-contained feature modules that can be built, tested, and even reused independently. Both patterns become more valuable as a codebase grows past a handful of screens. This is genuinely a topic on its own. For a full breakdown of Clean Architecture, Modular Architecture, and MVVM patterns for React Native, see our complete React Native app development guide , which covers folder structure, dependency direction, and practical examples in depth. Why React Native Architecture Matters for Your Business None of this is only a developer's concern. Architecture decisions show up directly in three places founders and product leads care about. Hiring is the first. A candidate who genuinely understands JSI, Fabric, and TurboModules will make fewer costly mistakes on native module integration, debug performance issues faster, and won't be caught off guard by a library that dropped legacy support. Architecture literacy is a reasonable filter when hiring React Native developers who understand the New Architecture , not a nice-to-have. Cost and timeline are the second. Migrating an older codebase to the New Architecture, or auditing third-party dependencies before a new build starts, is real engineering work that affects your budget and your launch date. If you're scoping a project, it's worth understanding how architecture choices factor into React Native development cost before you commit to a timeline. Startup stage is the third. Early architecture decisions are cheap to get right and expensive to unwind later, especially once a product has real users and a rebuild means real downtime. This matters even more for React Native for startups , where a lean team rarely has the bandwidth to rearchitect a shipped product from scratch. React Native's Architecture vs Flutter's Rendering Model The architectural difference between React Native and Flutter is worth understanding on its own terms, separate from the broader framework debate. React Native, through Fabric, ultimately renders real native UI components, meaning a button is a genuine native button on each platform. Flutter takes a different approach entirely: it draws every pixel itself using the Skia rendering engine, bypassing native UI components altogether in favor of full control over rendering. Both approaches can be fast, but they solve the same problem in fundamentally different ways, and that shows up in platform look-and-feel, third-party native integration, and how each framework handles OS-level UI updates. For the full comparison across cost, hiring, and ecosystem maturity, see React Native vs Flutter . Does the New Architecture Close the Gap With Native Performance? JSI and Fabric have meaningfully narrowed the gap between React Native and fully native development. Synchronous native calls, lazy-loaded modules, and a renderer that doesn't wait on an async queue mean most consumer apps, from social feeds to e-commerce to booking flows, now perform indistinguishably from native equivalents. Where native still has a real edge is at the extremes: heavy real-time 3D rendering, advanced AR or VR workloads, and use cases that need the deepest possible hardware access. For most product categories, that ceiling simply doesn't come up. For a full breakdown of where each approach makes sense, see React Native vs native app development . Migrating to the New Architecture: What It Involves If you're on an older React Native version, migration starts with an audit, not a rewrite. Check every third-party native library your app depends on for New Architecture compatibility; most major libraries have already migrated, but some smaller or unmaintained packages haven't, and those are the ones that will block you. Hermes is now a requirement rather than a configuration choice, so confirm it's enabled. From there, most teams can expect the migration itself to take somewhere between two and eight weeks, depending mainly on how much custom native code the app has written directly against the old Bridge APIs. Apps that stayed close to standard libraries tend to move faster; apps with heavy custom native modules take longer. Why Choose SpaceToTech for React Native Architecture & Development Understanding JSI, Fabric, and TurboModules is one thing. Building and maintaining production apps on them, at scale, across markets, is another. Our team works on the New Architecture by default, not as a migration project, which means every app we build starts with the performance and type-safety benefits this guide covers baked in from day one. Whether you're planning a new React Native mobile app development project or auditing an existing app for migration, explore our React Native app development services to see how we approach architecture from the first sprint.

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