What problem does it solve? Designing iOS apps that feel foreign or fail App Store review happens when layouts ignore safe areas, hardcode colors, skip Dark Mode, or use Android patterns like hamburger menus. This Skill provides a structured framework based on Apple's Human Interface Guidelines so interfaces respect platform conventions for navigation, typography, color, accessibility, and gestures. ## Core Features & Use Cases - Eight-Section Design Framework: Covers layout and safe areas, Dynamic Type typography, semantic colors and Dark Mode, navigation patterns, native controls, accessibility, SF Symbols and app icons, and gestures with haptics. - Scored Diagnostic Audit: A 10-point scoring rubric and Quick Diagnostic table to audit any iOS interface and identify specific fixes needed to reach native quality. - Deep-Dive References: Eleven reference files covering components, keyboard input, privacy permissions, widgets, Live Activities, Siri/Shortcuts, Handoff, and Spotlight integration. - Use Case: When building a SwiftUI settings screen, apply grouped list styling with toggles, semantic colors that adapt to Dark Mode, proper keyboard types with autofill content types, and VoiceOver labels on every control. ## Quick Start Use the ios-hig-design skill to review my SwiftUI profile screen layout for safe area, Dark Mode, and accessibility compliance.