What problem does it solve? Building React Native screens that feel truly native requires knowing which components, colors, and patterns match Apple HIG and Android Material conventions, and developers often pick deprecated or non-native libraries that break platform consistency. ## Core Features & Use Cases - Native UI Guidance: Covers semantic colors via the Color API from expo-router, SF Symbols icons, native controls (Switch, Slider, SegmentedControl, DateTimePicker), and liquid glass effects with expo-glass-effect. - Animations & Media: Provides Reanimated v4 patterns for entering/exiting, scroll-driven, and gesture animations, plus camera, audio, and video usage with expo-audio and expo-video. - Storage & Responsiveness: Recommends localStorage polyfill, expo-sqlite, and expo-secure-store, with responsive layout rules using ScrollView contentInsetAdjustmentBehavior and useWindowDimensions. - Use Case: When building a finance app screen in Expo, use this Skill to style a transaction list with semantic colors, SF Symbol icons, haptic-enabled controls, and smooth Reanimated list animations that adapt to dark mode automatically. ## Quick Start Use the expo-native-ui skill to build a native-feeling settings screen with semantic colors, a Switch, and a segmented control.