React Native & Expo Localization
Ship a mobile app in every language your users speak — device locale detection, offline caching, and over-the-air translation updates without an app store release.
Built for React Native and Expo
The SDK handles the parts of mobile localization that a web-first library leaves to you.
First-Class Expo Support
Works seamlessly with Expo's managed and bare workflows. No native module linking required — just install and start translating.
Device Locale Detection
Automatically detects the user's device language and region settings on both iOS and Android, with graceful fallback to your default locale.
Offline Translation Caching
Translations are cached locally on the device so your app works flawlessly in airplane mode, subways, and areas with poor connectivity.
Type-Safe SDK
Full TypeScript support with autocomplete for translation keys. Missing keys are caught at compile time, not discovered by users in production.
OTA Translation Updates
Push new translations and languages to production without resubmitting to the App Store or Google Play. Updates go live in seconds via CDN.
What makes mobile localization different
Intro
- Keeping translation bundle size small for fast app downloads
- Supporting offline-first usage when network is unavailable
- Handling platform-specific date, number, and currency formats on iOS vs Android
- Implementing right-to-left layout support for Arabic, Hebrew, and other RTL languages
- Maintaining locale-aware deep linking and navigation across app screens
Right-to-left layouts
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How the SDK fits into your app
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Developer experience
Typed hooks
Call useTranslations() in any component and get autocomplete for every key in your project.
Locale switching
Change language at runtime and the SDK pre-loads the messages before the screen re-renders — no flash of English.
Offline fallback
Translations are persisted on the device, so the app opens in the right language with no network.
From first key to shipped translation
Four steps, and none of them need an app store review.
Install the SDK
Add the Better I18N package to your React Native or Expo project and wrap your root component with the translation provider.
Extract Keys
Run the CLI to scan your components and automatically extract all translation keys into your resource files.
Translate with AI
Use AI-powered translation to instantly generate translations for all target languages, then review and refine as needed.
Deploy via CDN
Push translations to the global CDN. Your app fetches the latest translations automatically — no app store resubmission required.
Why teams use Better I18N for mobile
Content
Ship without a release
Publish a translation and the app picks it up on next launch — no binary, no store review.
One project, every platform
The same keys serve your mobile app, your website and your dashboard, so a term is translated once.
Context-aware AI
Translations are written against your product's own terminology, not word by word.