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iOS Human Interface Guidelines
ios-hig
Use when designing iOS interfaces, implementing accessibility (VoiceOver, Dynamic Type), handling dark mode, ensuring adequate touch targets, providing animation/haptic feedback, or requesting user permissions. Apple Human Interface Guidelines for iOS compliance.
SKILL.md
Full skill instructions
iOS Human Interface Guidelines
Apple's Human Interface Guidelines define the visual language, interaction patterns, and accessibility standards that make iOS apps feel native and intuitive. The core principle: clarity and consistency through thoughtful design.
Reference Loading Guide
ALWAYS load reference files if there is even a small chance the content may be required. It's better to have the context than to miss a pattern or make a mistake.
| Reference | Load When |
|---|---|
| Interaction | Touch targets, navigation, layout, hierarchy, or gesture patterns |
| Content | Empty states, writing copy, typography, or placeholder text |
| Visual Design | Colors, materials, contrast, dark mode, or SF Symbols |
| Accessibility | VoiceOver, Dynamic Type, Reduce Motion, or accessibility labels |
| Feedback | Animations, haptics, loading states, or error messages |
| Performance | Responsiveness, system components, or app launch |
| Privacy | Permission requests, data handling, or privacy-sensitive APIs |
Common Mistakes
-
Touch targets smaller than 44x44 points — Buttons and interactive elements must be at least 44x44 points (iOS) to accommodate thumbs. Smaller targets cause frustrated users and accessibility failures.
-
Ignoring Dynamic Type constraints — Text with fixed sizes doesn't respect user accessibility settings. Use Dynamic Type sizes, test with Large or Extra Large settings, and avoid hardcoded font sizes.
-
Insufficient color contrast in dark mode — Colors that work in light mode may fail accessibility in dark mode. Test with Reduce Contrast accessibility setting enabled for both modes.
-
Over-animating transitions — Animations that feel smooth at 60fps can trigger motion sickness in users with vestibular issues. Respect Reduce Motion settings and keep animations under 300ms.
-
Missing VoiceOver labels on custom controls — Custom buttons, toggles, or interactive views need
.accessibilityLabel()and.accessibilityHint()or they're completely unusable to screen reader users. -
Haptic overuse — Every action does NOT need haptic feedback. Reserve haptics for confirmations (purchase, critical action) and errors. Excessive haptics are annoying and drain battery.
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