Hig Patterns

Covers all the interaction and UX patterns from Apple's Human Interface Guidelines, from onboarding flows and loading states to drag and drop and file management. You'll want this when designing how users actually move through your app rather than just what buttons look like. It knows the difference between when to show a modal versus a sheet, why undo beats confirmation dialogs, and how to ask for permissions without annoying people. The pattern selection guide is genuinely useful, mapping user goals to specific approaches. Works best alongside the other HIG skills since it references foundations for principles and components for the actual UI elements you'll implement.