What problem does it solve? React Native apps often look and feel non-native because developers use deprecated components, hardcoded colors, and web-style patterns. This Skill provides opinionated guidelines for building Expo screens that follow Apple Human Interface Guidelines, adapt to light/dark mode automatically, and use the correct modern Expo APIs. ## Core Features & Use Cases - Native Styling System: Semantic colors via the Color API from expo-router, CSS boxShadow, continuous border curves, and safe-area-aware ScrollView layouts. - Component & Library Guidance: Enforces modern choices like @expo/ui native controls, expo-audio/expo-video over expo-av, SF Symbols over icon fonts, and localStorage over AsyncStorage. - Deep Reference Docs: Covers Reanimated animations, native controls, CSS gradients, camera/media capture, SQLite storage, blur and liquid glass effects, and WebGPU/Three.js 3D graphics. - Use Case: When asked to build a settings screen or camera flow in an Expo app, the Skill produces code with native switches, haptics, glass buttons, and theme-adaptive colors instead of generic cross-platform widgets. ## Quick Start Ask the AI to build a native-feeling Expo screen, such as a settings page with toggles and a profile header, following the expo-native-ui guidelines.