React Native: One Codebase, Two Platforms

React Native compiles JavaScript to native UI components - actual UIKit views on iOS and Android Views on Android - rather than rendering inside a WebView. This gives you true native performance and access to platform APIs while sharing up to 90% of code between platforms. Hybrid frameworks like Ionic or Cordova run in a browser context, which limits performance and native feel.

Yes. React Native renders genuine platform UI components, so buttons, navigation gestures, and scrolling behavior follow each platform's conventions. We add platform-specific styling where needed - for example, iOS-style navigation headers vs. Android Material patterns - so users on each platform feel at home.

For the vast majority of apps - ecommerce, fintech, social, productivity - React Native performance is indistinguishable from native. The new Architecture (Fabric + JSI) eliminates the asynchronous bridge bottleneck. For apps with heavy 3D rendering or extreme animation complexity, we integrate native modules or recommend a native approach.

Absolutely. We use well-maintained community libraries (react-native-vision-camera, react-native-ble-plx) or write custom native modules in Swift/Kotlin to bridge hardware APIs into JavaScript. There is no hardware feature that is off-limits for React Native.

An MVP with authentication, core screens, and an API integration takes 6-10 weeks. A full-featured consumer app takes 3-5 months. Enterprise apps with offline sync, complex permissions, and admin portals may take 5-8 months. We provide a detailed timeline after the discovery sprint.

We default to Expo Managed or Bare Workflow because it dramatically speeds up setup and gives access to EAS Build and EAS Update. We eject to bare React Native when a third-party SDK requires Gradle or Podfile customization that Expo cannot accommodate. The choice is driven by your requirements, not preference.

We configure Expo EAS Update (or Microsoft CodePush for non-Expo projects) so you can push JavaScript and asset changes instantly without waiting for App Store review. This is ideal for hotfixes and iterating on UI after launch. Native code changes still require a store submission.

Our QA process combines Jest unit tests, React Testing Library component tests, and Detox end-to-end tests that run on physical iOS and Android devices via EAS Build. We also use BrowserStack Device Farm for broader device coverage before each release.

Yes. We connect to REST APIs, GraphQL endpoints, WebSocket servers, Firebase, Supabase, or any custom backend. We set up a typed API client layer (RTK Query or React Query) so the app handles loading states, caching, and error recovery cleanly.

Yes. We prepare all required assets - app icons, screenshots, preview videos, privacy manifests, and App Privacy declarations - and manage the submission process. We handle signing certificates, provisioning profiles, and AAB/IPA generation via EAS Build.

Yes. We regularly perform codebase audits on inherited projects, identify architectural debt, upgrade dependencies (including major Expo SDK versions), and take over ongoing development. We provide a written audit report before committing to the engagement.

A focused MVP with accounts, payments, a content layer and an admin panel is 800-1,410 hours, or $24,000-$43,000 at our rate card. A full consumer app adding chat, real-time and offline sync is 1,240-2,310 hours, or $38,000-$70,000. Pricing moves with feature depth, the number of integrations and whether design is included - each integration with someone else's system is 70-180 hours. Reproduce it at kultrix.com/cost-calculator.