JavaScript teams, native-quality mobile apps.
React Native's new architecture (JSI + Fabric + TurboModules) has closed most of the performance gap with native development — and for teams already building in React, it represents a genuine reduction in context-switching overhead and codebase fragmentation. We build React Native apps with the new architecture enabled, proper native modules where the JavaScript layer isn't enough, and the same discipline around testing and architecture that we apply to Flutter and native builds. If your team has JavaScript expertise and your app doesn't need deep platform-specific APIs, React Native is the pragmatic choice.
React Native's new architecture (JSI + Fabric + TurboModules) has closed most of the performance gap with native. For teams already building in React, it reduces context-switching and enables code sharing between web and mobile. Origin Softwares builds React Native apps with the New Architecture enabled, proper native modules where needed, and the same testing discipline as native builds.
What is React Native and when should you use it?
React Native is Meta's cross-platform framework that builds iOS and Android apps using JavaScript and React. It is the right choice when your team already has JavaScript/React expertise and you want to share business logic with a React web frontend. The New Architecture (JSI, Fabric, TurboModules) has closed the performance gap with native for most use cases — JSI enables direct synchronous communication between JavaScript and native code, removing the bottleneck of the old asynchronous bridge. Origin Softwares in Hyderabad builds React Native apps with the New Architecture enabled on all new projects, Expo for managed workflows where appropriate, and native modules where JavaScript alone is not enough.
The problems this solves
- Web team already in React but needs a mobile app — context-switching to a new language is expensive
- Need to share business logic between React web app and mobile app
- Existing React Native app on old architecture needs migration to New Architecture
- Need over-the-air updates to fix bugs without App Store review delays
- Cross-platform app has bridge performance issues on the old architecture
- Maintaining separate native codebases alongside a React web frontend
Business outcomes
- 60%+ code shared between iOS, Android, and web in a monorepo setup
- Team efficiency — React developers productive on mobile without learning new languages
- OTA updates via EAS pushing bug fixes without store review delays
- New Architecture performance matching native for most use cases
- Single data layer and API client shared across all platforms
- Reduced hiring cost — one language (TypeScript) across web and mobile
Who is this for?
Teams with React/JavaScript expertise
Your developers already know React — React Native means they are productive on mobile without learning Swift, Kotlin, or Dart.
Products with React web apps
A monorepo shares business logic, types, and API clients between your web and mobile apps — one data layer, not two.
Products needing OTA updates
EAS Update pushes JavaScript changes to installed apps without store review — critical for rapid bug fixes and feature flags.
Startups optimising for speed
Expo managed workflow removes native build complexity and gets you to TestFlight faster with less infrastructure overhead.
Existing React Native apps needing modernisation
Old architecture apps with performance issues can migrate to New Architecture incrementally.
When React Native App Development may not be the right fit
We'd rather tell you upfront than waste your time and budget.
- If your team does not have JavaScript/React expertise and there is no code sharing advantage
- If performance requirements demand closer-to-native rendering (Flutter or native is better)
- If you need extensive platform-specific UI and gesture work beyond what React Native handles well
- If starting fresh with no existing React web codebase — Flutter is often the better default
What's included
- New Architecture (JSI, Fabric, TurboModules)
- Shared logic with web React codebase
- Native module bridging where needed
- Expo for managed workflow or bare React Native
- OTA updates via Expo EAS Update
- iOS & Android from one JavaScript codebase
How we deliver
Architecture Decision
Choose Expo vs bare, plan monorepo structure, and validate New Architecture compatibility.
- Expo vs bare React Native decision
- Monorepo setup planning (if web + mobile)
- Dependency audit for New Architecture compatibility
- State management selection (Zustand, React Query)
- OTA update strategy and compliance boundaries
Shared Layer Setup
Build the shared business logic, types, and API clients.
- Monorepo configuration (Turborepo)
- Shared TypeScript types and schemas
- API client shared between web and mobile
- State management layer
- Authentication flow shared across platforms
Mobile Build
Build the mobile UI with React Native-specific components.
- React Navigation setup
- Screen implementation with platform conventions
- Native module integration where needed
- Reanimated animations
- Push notification infrastructure
Testing & Store Prep
Test across platforms and prepare for store submission.
- Device testing on iOS and Android
- EAS Build pipeline validation
- App Store and Play Store compliance check
- Performance profiling
- OTA update flow verification
Launch
Submit via EAS and configure production monitoring.
- EAS Submit to both stores
- Crash monitoring activation
- OTA update infrastructure verified
- Analytics configured
- Post-launch monitoring
How does React Native compare to Flutter?
Both produce cross-platform iOS and Android apps from a single codebase. Flutter uses Dart and renders its own UI layer (closer to native performance, consistent rendering). React Native uses JavaScript and native platform UI components (better code sharing with React web apps, uses platform-native controls). Choose React Native if your team knows JavaScript/React, you want monorepo code sharing with your web app, or you need OTA updates via Expo EAS Update — which can push JavaScript bundle fixes to installed apps without waiting for store review. Choose Flutter for performance-critical apps or when starting fresh without existing React investment. Origin Softwares builds with both and recommends based on your team and requirements.
Technologies we use
- React Native
- TypeScript
- Expo
- React Navigation
- Zustand
- React Query
- MMKV
- Reanimated 3
- Sentry
- EAS Build
Architecture & scalability
- New Architecture (JSI, Fabric, TurboModules) for performance parity with native
- Expo managed workflow for simplified builds or bare for full native access
- Turborepo monorepo for web + mobile code sharing
- Zustand for lightweight state management or React Query for server state
- MMKV for high-performance local storage
- EAS Update for OTA deployment within Apple compliance boundaries
React Native vs Flutter vs Native
| Criterion | React Native (New Arch) | Flutter | Native |
|---|---|---|---|
| Language | JavaScript/TypeScript | Dart | Swift / Kotlin |
| Performance | Good (JSI eliminates bridge bottleneck) | Near-native (Skia/Impeller) | Best |
| Web code sharing | High — monorepo with React web | Limited (Dart, not JavaScript) | None |
| OTA updates | EAS Update (no store review) | Not natively supported | Not possible |
| Ecosystem maturity | Large (JavaScript ecosystem) | Growing rapidly | Platform-specific, comprehensive |
| Best for | React teams needing mobile with web code sharing | Most cross-platform apps prioritising performance | Deep platform integration or single-platform products |
Why choose Origin Softwares
Our approach
- New Architecture enabled on every new project — JSI, Fabric, TurboModules from day one
- Native modules written when JavaScript is not enough — we do not stretch the framework past its limits
- Monorepo setup for web + mobile code sharing delivering 60%+ shared logic
- OTA updates via EAS configured with Apple compliance boundaries documented
Delivery standards
- New Architecture enabled on all projects
- TypeScript throughout (no untyped JavaScript)
- Expo managed workflow where appropriate, bare when needed
- EAS Build and Submit pipeline configured
- Crash monitoring (Sentry) from first beta
Quality assurance
- Unit tests for business logic (shared with web)
- Component tests with React Native Testing Library
- Integration tests for critical flows
- Device testing on real iOS and Android hardware
- New Architecture compatibility testing for all dependencies
Security practices
- MMKV for encrypted key-value storage
- Certificate pinning for API calls
- Sensitive data excluded from JavaScript bundle
- EAS Update compliance with Apple guidelines documented
- No sensitive data in Metro bundler logs
Performance
- New Architecture (JSI) for synchronous native communication
- Reanimated 3 for 60fps animations on the UI thread
- FlashList for performant large lists
- Hermes engine for faster startup and lower memory
- Bundle size monitoring with Metro visualiser
What you receive
- iOS and Android apps submitted to both stores
- Full TypeScript source code in monorepo
- EAS Build and Submit pipeline configured
- Crash reporting dashboard
- OTA update infrastructure ready for use
Support tiers
- Bug fix tier — critical fixes via OTA within 24 hours (JavaScript changes) or 48 hours (native changes requiring store review)
- Maintenance tier — dependency updates, New Architecture compatibility, OS updates
- Growth tier — feature iteration, performance optimisation, platform expansion
Why Origin for React Native App Development
New Architecture from day one
JSI, Fabric, and TurboModules are enabled on every project we start. Performance improvements are built in, not retrofitted when users complain.
Native modules when JavaScript isn't enough
We don't stretch React Native beyond its capabilities. When a use case genuinely needs native code — camera pipelines, Bluetooth, custom sensors — we write the native module, not a workaround.
Monorepo setup for web + mobile code sharing
If you have a React web app, we set up a Turborepo monorepo that shares business logic, types, and API clients. You maintain one data layer, not two.
Industries we serve
Typical delivery timeline
| Phase | Duration | What happens |
|---|---|---|
| Architecture | 1 week | Expo vs bare, monorepo, dependency audit |
| Shared Layer | 1–2 weeks | Types, API client, auth flow |
| Mobile Build | 6–12 weeks | Sprint builds with biweekly betas |
| Testing | 1–2 weeks | Device testing, store prep, performance |
| Launch | 1 week | EAS Submit, monitoring, OTA verification |
Before you start — a checklist
Use this to prepare for your first conversation with us.
- Assess whether your team has JavaScript/React expertise (the primary reason to choose React Native)
- Determine how much code sharing with a React web app is realistic and valuable
- Decide between Expo managed workflow (simpler) and bare React Native (more native access)
- Identify native modules needed and verify New Architecture compatibility
- Plan the OTA update strategy and understand Apple's compliance boundaries
- Evaluate whether React Native's performance is sufficient for your specific use case
Maintenance & support
- React Native and Expo SDK updates with compatibility testing
- New Architecture migration support for dependencies that update
- EAS Update management and deployment
- Crash monitoring and bug fix SLA
- Store compliance updates for both platforms
- Performance regression testing after framework updates
“Our web team was already in React. Origin set up a monorepo where 70% of our data layer and business logic is shared between the web app and the mobile app. Shipping a feature means shipping it once.”
Frequently asked questions
Planning & scope
- Should we use Expo or bare React Native?
- Expo managed workflow for most new projects — it handles native build toolchain, OTA updates, and gives you EAS Build for CI/CD without managing Xcode and Android Studio. Bare React Native when you need a native module Expo does not support or full access to the native layer. We start with Expo and only eject when genuinely necessary — the managed workflow has expanded significantly and covers most use cases.
- Can we share code with our React web app?
- Business logic, data fetching, state management, and TypeScript types share cleanly via a Turborepo monorepo. UI components cannot — React Native uses native components (View, Text), not DOM elements (div, span). We scope exactly what is shareable based on your web architecture and set up the monorepo so shared packages work across both environments.
Technical
- What is the New Architecture and should we use it?
- The New Architecture (JSI, Fabric, TurboModules) replaces the old asynchronous bridge with direct synchronous communication between JavaScript and native code. The result: smoother animations, faster startup, and better performance on mid-range devices. We enable it on all new projects. For existing apps, we migrate incrementally after a dependency compatibility audit.
- How do OTA updates work?
- EAS Update pushes JavaScript bundle changes to installed apps without store review. Useful for bug fixes, content changes, and feature flags. The constraint is Apple's guidelines: OTA can only change JavaScript, not native code, and must not significantly change the app's primary purpose. We implement EAS Update for appropriate use cases and document the compliance boundaries clearly so you know what can and cannot ship via OTA.
Engagement & process
- We have an existing React Native app on the old architecture — can you migrate it?
- Yes. Migration involves enabling New Architecture flags, updating third-party libraries to compatible versions, and addressing custom native modules. We start with a dependency audit to identify blockers, then migrate incrementally. Most apps can migrate without a full rewrite — the New Architecture is designed for incremental adoption.
- How fast can critical bugs be fixed?
- JavaScript-only bug fixes can ship via OTA within 24 hours — no store review required. Fixes requiring native code changes take 48 hours including store submission and review. This is a significant advantage of React Native with EAS Update — critical bug response is measured in hours, not days of store review queue time.
Related services
Mobile App Development
React Native is one framework option — recommended when JavaScript expertise and web code sharing are priorities.
Web Development
React Native and React web in a monorepo — shared logic, types, and API clients across both platforms.
Custom Software
Mobile apps need backend APIs — we build both in TypeScript for end-to-end type safety.
Not sure where to start?
Tell us about your existing tech stack and whether code sharing with a web app matters — we will confirm whether React Native or Flutter is the better choice for your team and project.
Get a free consultation