React Native Development —
One Codebase. iOS + Android.
Build production-grade iOS and Android apps from a single React Native codebase. TypeScript, New Architecture, Expo or bare workflow — we ship cross-platform apps that feel truly native.
React Native App Development Services
Cross-Platform App (Expo)
Expo Managed Workflow is the fastest path to a production React Native app. Handles OTA updates, build infrastructure, and device testing without native toolchain management. Best for apps that don't need custom native modules.
Bare React Native / Custom Native Modules
When Expo's managed workflow isn't enough — NFC, Bluetooth, custom camera SDKs, biometric auth, or deep hardware integrations — we use bare React Native with custom native modules written in Swift/Objective-C and Kotlin/Java.
Shopify Mobile Commerce App
React Native app connected to your Shopify store via the Storefront GraphQL API. Custom brand, custom UX — not a generic Shopify template. Product catalogue, collections, cart, checkout, Apple Pay / Google Pay, order tracking, and push notifications.
React Native + Supabase / Firebase
Real-time apps, user authentication, and scalable backend using Supabase (PostgreSQL + realtime) or Firebase (Firestore + Cloud Functions). We architect the full data model and security rules, not just wire up the client SDK.
App Performance Optimisation
Existing React Native app that's slow or janky? We profile using Flipper and the React Native Performance Monitor, eliminate unnecessary re-renders, implement FlatList optimisation, and migrate to the New Architecture (Fabric + TurboModules) where appropriate.
Migration from Ionic / Cordova
Cordova and Ionic webview apps are dated and slow. We migrate them to proper React Native — component by component if needed — improving performance, UX, and access to native APIs without a complete rewrite from scratch.
How We Build React Native Apps
TypeScript First
Every React Native project we build uses TypeScript from day one. Types prevent a whole class of bugs at compile time, make the codebase navigable, and make handover to your internal team significantly easier.
New Architecture Ready
React Native's New Architecture (Fabric renderer + TurboModules + JSI) is now stable and we build new projects on it. JSI eliminates the async bridge bottleneck that caused performance issues in older React Native apps.
Proper Navigation
We use React Navigation 7 with typed routes and Expo Router for file-based navigation on Expo projects. Deep linking, authentication-gated routes, and platform-specific tab/drawer navigation are set up correctly from the start.
State Management
We choose state management based on your app's complexity: Zustand for simple apps, Redux Toolkit for complex enterprise apps, TanStack Query for server state. We document the architecture so your team can maintain it.
Technology Stack
What Our React Native Clients Say
"The React Native app Sigill built for our Shopify store has 4.9 stars on the App Store and 4.8 on Play Store. The checkout is seamless, the performance is excellent, and our mobile revenue has doubled since launch."
"We replaced our slow Ionic app with a React Native rebuild from Sigill. The new app loads in under 2 seconds (vs 7 seconds before), and our user retention improved by 40% in the first quarter."
"Sigill used Expo for our MVP and we shipped to both platforms in 8 weeks. The TypeScript codebase is clean and well-documented — our in-house developer picked it up on day one."
Frequently Asked Questions
Start with Expo Managed Workflow unless you have a specific need for custom native code. Expo handles the build infrastructure, OTA updates, and native module management. You can eject to bare workflow later if needed. We recommend bare React Native only when you need custom native modules (Bluetooth, NFC, biometric hardware, specific camera SDKs) that aren't available as Expo modules.
A simple React Native app (5–8 screens, auth, API integration) typically costs ₹3,00,000–₹6,00,000. A mid-size ecommerce app with product catalogue, cart, checkout, and payment gateway costs ₹7,00,000–₹15,00,000. A complex app with real-time features, multiple user roles, and custom native modules costs ₹15,00,000+. All projects are fixed-price.
React Native with the New Architecture (JSI + Fabric) achieves near-native performance for the vast majority of app types. The JavaScript bridge bottleneck that caused older React Native apps to lag is eliminated by JSI (JavaScript Interface), which allows direct, synchronous communication between JavaScript and native code. For extremely performance-sensitive tasks (heavy 3D rendering, intensive image processing), native is still better — but this applies to fewer than 5% of apps.
Yes — all our React Native projects are TypeScript from the initial scaffold. TypeScript prevents type-related bugs, makes navigation types explicit, and makes the codebase maintainable after handover. We also use Zod for runtime type validation on API responses.
Yes — Razorpay has an official React Native SDK. We integrate it with the full payment flow (order creation on backend, payment on device, webhook-based confirmation), handle UPI deep links, and test across all payment methods (UPI, cards, netbanking, wallets). We've integrated Razorpay in 15+ React Native apps.
Yes — and this is one of our most requested React Native projects. We use Shopify's Storefront GraphQL API to build a fully custom branded mobile commerce app. You get your own app in the App Store and Play Store with your brand identity, not a generic Shopify mobile app. Features: product browsing, collections, search, cart, guest and logged-in checkout, Apple Pay / Google Pay, order history, and push notifications.
The New Architecture is React Native's reimplemented core — Fabric (new renderer), TurboModules (new native module system), and JSI (JavaScript Interface). It eliminates the async JSON bridge between JavaScript and native code, replacing it with a synchronous JSI bridge. This significantly reduces jank in complex UIs and enables synchronous native calls. All new projects we build use the New Architecture.
Yes — we handle the full submission process for both stores. For iOS: Xcode archive, TestFlight beta, App Store submission with screenshots and metadata. For Android: signed APK/AAB, Play Store internal testing track, then production release. We handle any review feedback from Apple.
An MVP app on Expo with 6–8 screens takes 6–10 weeks. A full-featured ecommerce app takes 12–16 weeks. A complex multi-role app takes 16–24 weeks. Sprint-based development means you see working builds on real devices every two weeks.
Yes — React Native requires ongoing maintenance because both Expo and React Native release major versions frequently, and Apple/Google make OS-level changes that can affect apps. We offer monthly retainer support covering RN/Expo version upgrades, dependency security updates, crash monitoring via Sentry, and feature additions.
Let's Build Your React Native App
Tell us about your app — what it does, who uses it, and which platforms you need. We'll send a fixed-price proposal within 24 hours.