agency-mobile-app-builder

SwiftUI development uses declarative views with @StateObject and ObservableObject view models following the MVVM pattern. The skill generates components with searchable lists, pagination triggers, refreshable content, and async data loading through task modifiers.

Choose native (Swift/Kotlin) when you need deep platform integration, maximum performance, or heavy use of platform-specific APIs like ARKit or HealthKit. Choose React Native or Flutter when code sharing across platforms and faster iteration matter more than platform-specific polish.

Offline-first architecture uses local storage (Core Data on iOS, Room on Android) as the source of truth with intelligent synchronization to remote APIs. The skill designs caching strategies and data sync logic so apps function under poor network conditions.

Yes, Jetpack Compose integrates with ViewModel using StateFlow and collectAsStateWithLifecycle for lifecycle-aware state collection. Combined with Hilt dependency injection, this provides reactive UI updates and proper configuration change handling.

Target under 3 seconds cold startup time, under 100MB memory usage for core functionality, less than 5% battery drain per hour of active use, and a crash-free rate above 99.5%. These metrics guide the optimization techniques the skill applies.