Apple Human Interface Guidelines for platform-specific design. Use this skill when the user asks about "designing for iOS", "iPad app design", "macOS design", "tvOS", "visionOS", "watchOS", "Apple platform", "which platform", platform differences, platform-specific conventions, or multi-platform app design.
Install
npx skills add raintree-technology/hig-doctor --skill hig-platformsnpx skills add raintree-technology/hig-doctor --skill hig-platforms -a claude-code -gnpx skills add raintree-technology/hig-doctor --skill hig-platforms -a codex -ggemini skills install https://github.com/raintree-technology/hig-doctor.git --path skills/hig-platformsgh skill install raintree-technology/hig-doctor hig-platformsgit clone --depth 1 https://github.com/raintree-technology/hig-doctor /tmp/raintree-technology__hig-doctor
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/raintree-technology__hig-doctor/skills/hig-platforms ~/.claude/skills/hig-platforms # Claude Code
cp -R /tmp/raintree-technology__hig-doctor/skills/hig-platforms ~/.agents/skills/hig-platforms # Codex, Cursor, Gemini CLI, Copilot, OpenCode