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MusicKit Now Playing integration patterns. Use when playing Apple Music content with ApplicationMusicPlayer and understanding automatic vs manual Now Playing info updates.
This skill should be used when working with NWConnection patterns for iOS 12-25, supporting apps that can't use async/await yet, or maintaining backward compatibility with completion handler networking.
Use when implementing iOS 26 SwiftUI features - covers Liquid Glass design system, performance improvements, @Animatable macro, 3D spatial layout, scene bridging, WebView/WebPage, AttributedString rich text editing, drag and drop enhancements, and visionOS integration for iOS 26+
MetricKit API reference for field diagnostics - MXMetricPayload, MXDiagnosticPayload, MXCallStackTree parsing, crash and hang collection
Jest and React Native Testing Library patterns. Use when writing component tests.
EAS Update for OTA updates. Use when setting up over-the-air updates.
Comprehensive guide for Flutter navigation and routing including Navigator API, go_router, deep linking, passing/returning data, and web-specific navigation. Use when implementing screen transitions, configuring routing systems, setting up deep links, handling browser history, or managing navigat...
Expo Router file-based navigation patterns. Use when implementing navigation.
FlashList high-performance list patterns. Use when implementing lists.
Expo SDK configuration and setup. Use when configuring Expo projects.
React Hook Form and Zod for React Native forms. Use when implementing forms.
Gluestack-ui component library setup and usage. Use when implementing pre-built accessible components.
Complete guide for building beautiful apps with Expo Router. Covers fundamentals, styling, components, navigation, animations, patterns, and native tabs.
Expert Flutter specialist mastering Flutter 3+ with modern architecture patterns. Specializes in cross-platform development, custom animations, native integrations, and performance optimization with focus on creating beautiful, native-performance applications.
Expert Swift developer specializing in Swift 5.9+ with async/await, SwiftUI, and protocol-oriented programming. Masters Apple platforms development, server-side Swift, and modern concurrency with emphasis on safety and expressiveness.
Expert Kotlin developer specializing in coroutines, multiplatform development, and Android applications. Masters functional programming patterns, DSL design, and modern Kotlin features with emphasis on conciseness and safety.
Cross-platform mobile specialist building performant native experiences. Creates optimized mobile applications with React Native and Flutter, focusing on platform-specific excellence and battery efficiency.
Expert mobile app developer specializing in native and cross-platform development for iOS and Android. Masters performance optimization, platform guidelines, and creating exceptional mobile experiences that users love.
iOS App Store and Google Play submission requirements and process.
Design iOS apps following Apple's Human Interface Guidelines. Generate native components, validate designs, and ensure accessibility compliance for iPhone, iPad, and Apple Watch.
Reference — AVFoundation audio APIs, AVAudioSession categories/modes, AVAudioEngine pipelines, bit-perfect DAC output, iOS 26+ spatial audio capture, ASAF/APAC, Audio Mix with Cinematic framework
Atomic Design component organization pattern for React Native mobile applications. Use when creating new components with proper accessibility and touch targets.
AVCaptureSession, camera preview, photo capture, video recording, RotationCoordinator, session interruptions, deferred processing, capture responsiveness, zero-shutter-lag, photoQualityPrioritization, front camera mirroring
Complete background task API reference - BGTaskScheduler, BGAppRefreshTask, BGProcessingTask, BGContinuedProcessingTask (iOS 26), beginBackgroundTask, background URLSession, with all WWDC code examples
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