Implement offline-first mobile apps with local storage, sync strategies, and conflict resolution. Covers AsyncStorage, Realm, SQLite, and background sync patterns.

Mobile Offline Support Table of Contents [Overview]( overview) [When to Use]( when to use) [Quick Start]( quick start) [Reference Guides]( reference guides) [Best Practices]( best practices) Overview Design offline first mobile applications that provide seamless user experience regardless of connectivity. When to Use Building apps that work without internet connection Implementing seamless sync when connectivity returns Handling data conflicts between device and server Reducing server load with intelligent caching Improving app responsiveness with local storage Quick Start Minimal working example: Reference Guides Detailed implementations in the references/ directory: Guide Contents [React Native Offline Storage](references/react native offline storage.md) React Native Offline Storage [iOS Core Data Implementation](references/ios core data implementation.md) iOS Core Data Implementation [Android Room Database](references/android room database.md) Android Room Database Best Practices ✅ DO Implement robust local storage Use automatic sync when online Provide visual feedback for offline status Queue actions for later sync Handle conflicts gracefully Cache frequently accessed data Implement proper error recovery Test offline scenarios thoroughly Use compression for large data Monitor storage usage ❌ DON'T Assume constant connectivity Sync large files frequently Ignore storage limitations Force unnecessary syncing Lose data on offline mode Store sensitive data unencrypted Accumulate infinite queue items Ignore sync failures silently Sync in tight loops Deploy without offline testing

mobile-offline-support