Mobile Development Agent Skills

Build and submit Expo apps to the iOS App Store, Google Play Store, and TestFlight using EAS, with configuration for build profiles, version management, and store metadata.

Migrate an existing web React app to a native iOS/Android app with Expo, screen by screen, using a strangler-fig pattern that ships the web UI in a DOM-component shell on day one and nativizes screens by value.

Generates a three-screen mobile onboarding flow with splash, value proposition, and sign-in screens displayed side by side.

Captures marketing screenshots of a SwiftUI iOS app across multiple locales, devices, and appearances, producing full-screen captures and isolated element renders.

Runs a comprehensive mobile QA audit covering permissions, deep links, push notifications, offline mode, background/foreground transitions, memory leaks, network conditions, accessibility, and platform edge cases for Flutter, React Native, and native iOS/Android apps.

Launches a Flutter app on a simulator or emulator, generates and runs exhaustive integration tests covering every screen, button, form, and user flow, then self-heals failures.

Provides living project knowledge for the OpenFoodJournal iOS app, including architecture, data models, service contracts, and conventions, to be consulted before any work on the project.

Build, review, or improve SwiftUI features using the iOS 26+ Liquid Glass API, with guidance on availability, composition, and performance.

Provides SwiftUI architecture patterns for state management with @Observable, view composition, navigation, and performance optimization for iOS and macOS apps.

Guides Android app builds and deployments, covering ADB installs, Gradle configuration, Compose state management, and manifest pitfalls.

Develops native Android apps with Kotlin and Java, covering UI, performance, and Play Store deployment.

Persists app data on Android using Room, SQLite, SharedPreferences, DataStore, and encryption.

Integrates Firebase services into a Flutter app, covering authentication, Firestore, storage, messaging, analytics, crash reporting, and remote configuration with Provider state management.

Implements deep linking, universal links (iOS), and app links (Android) in Flutter using go_router, including domain configuration, file association, and URL-based dynamic routing.

Implements offline-first architecture in Flutter apps with local caching, bidirectional sync, connectivity detection, and conflict resolution.

Integrates Google Maps and Mapbox into Flutter apps with markers, polylines, clustering, location tracking, and routing.

Implement Flutter animations and motion design, from implicit and explicit animations to Hero transitions, Rive, and Lottie, with project structure and code examples.

Implements push notifications with Firebase Cloud Messaging and local notifications in Flutter, covering iOS APNS, Android, foreground/background handling, actions, and deep linking.

Guides building Expo Router navigation with file-based routing, layouts, tabs, protected routes, and deep linking.

Build cross-platform AI chat interfaces with Makepad using MolyKit, covering async patterns, bot client integration, SSE streaming, and chat widgets.

Scaffolds a new mobile-first page using StyleSeed Toss layout patterns, section rhythm, and existing shell components.

Provides production-ready Dart and Flutter code patterns for null safety, immutable state, async composition, widget architecture, state management, navigation, networking, and testing.

Analyzes Android apps to identify user workflows for AppFunctions, generates Kotlin code to expose them to the Android system, and refines KDoc documentation for AI agent compatibility.

Adapt Android app UIs to phones, tablets, foldables, desktops, and other devices using Compose, including window size handling, multi-pane layouts, and adaptive navigation.

Build cross-platform applications with Flutter 3+ and Dart, covering widget development, Riverpod/Bloc state management, GoRouter navigation, platform-specific implementations, and performance optimization.

Guides production-grade Android and cross-platform app development covering stack selection, architecture, UI, testing, build, and release.

Implements in-app purchases and subscriptions in Flutter using the in_app_purchase plugin and RevenueCat, covering consumables, non-consumables, restore purchases, and receipt validation.

Use Expo DOM components to run web code in a webview on native and as-is on web, enabling incremental migration of web code to native.

Provides procedural guidance and standard patterns for building Android camera applications with CameraX, including Camera2Interop, Media3 integrations, and handling hardware diversity.

Build beautiful, native-feeling Expo screens with Apple HIG styling, semantic colors, native controls, SF Symbols, media, animations, visual effects, gradients, storage, and responsive layout.

Provides best practices for building performant React Native and Expo apps, covering list performance, animations, navigation, UI patterns, state management, rendering, monorepo structure, and configuration.

Build reliable Flutter apps by avoiding state loss, widget rebuild traps, and async pitfalls.

Adopt Swift 6.2's Approachable Concurrency model, which runs code single-threaded by default and uses explicit @concurrent for background offloading, isolated conformances, and MainActor default inference to eliminate data-race errors.

Provides SwiftUI architecture guidance covering state management with @Observable, view composition, type-safe navigation, performance optimization, and modern iOS/macOS UI best practices.

Implements the MVVM pattern in Flutter with Provider and ChangeNotifier, structuring projects into models, views, and viewmodels for testable, maintainable code.

Integrates Stripe and PayPal payment processing into Flutter apps, covering one-time payments, subscriptions, and digital wallets.