Fact lookup: Apple Human Interface Guidelines corpus (greppable markdown). Query on demand for accessibility and ergonomic minimums (hit-target sizes, Dynamic Type), platform terminology, system component capabilities, and App-Review-relevant conventions. Not design direction.

Human Interface Guidelines Reference Local greppable copy of Apple's Human Interface Guidelines — an on demand fact lookup, not design direction. Use it to answer factual questions: what a system component can do, what Apple calls something, accessibility and ergonomic minimums (44pt hit targets, Dynamic Type behavior, contrast), and conventions App Review actually checks. Visual design in our repos is the designing model's own taste. Consult the HIG for facts, never for aesthetics — it describes what the system provides and requires, not what your screen should look like. Downloaded Reference Files All key HIG documentation is available locally (grep friendly): Getting Started File Content Size [hig index.md](hig index.md) Full HIG table of contents 11KB [designing for ios.md](designing for ios.md) iOS design principles 5KB Foundations File Content Size [app icons.md](app icons.md) App icon design guidelines 14KB [color.md](color.md) Color usage and system colors 17KB [typography.md](typography.md) Fonts, text styles, Dynamic Type 17KB [layout.md](layout.md) Layout principles, safe areas 21KB [materials.md](materials.md) Materials, blur effects, vibrancy 14KB [motion.md](motion.md) Animation principles 9KB [accessibility.md](accessibility.md) Accessibility best practices 19KB [sf symbols.md](sf symbols.md) SF Symbols usage 21KB Patterns File Content Size [onboarding.md](onboarding.md) Onboarding flows 6KB [modality.md](modality.md) Modal presentations 7KB [launching.md](launching.md) App launch experience 6KB [feedback.md](feedback.md) User feedback patterns 5KB [playing haptics.md](playing haptics.md) Haptic feedback 10KB [searching.md](searching.md) Search patterns 7KB [settings.md](settings.md) Settings patterns 7KB Components Navigation File Content Size [tab bars.md](tab bars.md) Tab bar design 11KB [navigation bars.md](navigation bars.md) Navigation bar patterns 17KB [toolbars.md](toolbars.md) Toolbar design 17KB [sidebars.md](sidebars.md) Sidebar patterns 8KB Components Presentation File Content Size [sheets.md](sheets.md) Sheet presentations 11KB [alerts.md](alerts.md) Alert dialogs 10KB [action sheets.md](action sheets.md) Action sheets 4KB [menus.md](menus.md) Menu design 14KB Components Controls File Content Size [buttons.md](buttons.md) Button styles and usage 17KB [lists and tables.md](lists and tables.md) List and table patterns 9KB [toggles.md](toggles.md) Toggle/switch design 9KB [pickers.md](pickers.md) Picker controls 6KB [sliders.md](sliders.md) Slider controls 6KB [steppers.md](steppers.md) Stepper controls 2KB [text fields.md](text fields.md) Text input fields 6KB Searching the Docs Fetching More Docs 1. Search this skill's local .md files first. 2. If the topic is not here, check the other installed Apple skills you have available by their names, descriptions, or SKILL.md frontmatter, then grep their local files. This is faster and uses less context than fetching new docs from the internet. 3. If no installed skill has the page, use the relevant Human Interface Guidelines path with the sosumi.ai Markdown mirror. For example, /design/human interface guidelines/buttons maps to https://sosumi.ai/design/human interface guidelines/buttons . Common HIG Doc Paths Topic URL Path Full Index human interface guidelines iOS Design human interface guidelines/designing for ios iPadOS Design human interface guidelines/designing for ipados macOS Design human interface guidelines/designing for macos App Icons human interface guidelines/app icons Color human interface guidelines/color Typography human interface guidelines/typography Layout human interface guidelines/layout Accessibility human interface guidelines/accessibility SF Symbols human interface guidelines/sf symbols Buttons human interface guidelines/buttons Tab Bars human interface guidelines/tab bars Navigation Bars human interface guidelines/navigation bars Sheets human interface guidelines/sheets Alerts human interface guidelines/alerts Quick Facts System Button Styles (iOS) What the system provides out of the box: Plain Text only, minimal visual weight Gray Gray background Tinted Tinted background with accent color Filled Solid background Bordered Outlined with border Bordered Prominent Filled background, high prominence Haptic Feedback Types Selection Light tap for selection changes Impact Light/medium/heavy/rigid/soft for collisions Notification Success/warning/error for outcomes Safe Areas (ergonomic facts) Content outside safe areas can be clipped by the notch/Dynamic Island, home indicator, or rounded corners Interactive elements outside safe areas may be unreachable or intercepted by system gestures Backgrounds can extend edge to edge without those risks Sources Apple Documentation [Human Interface Guidelines](https://developer.apple.com/design/human interface guidelines/) [Design Resources](https://developer.apple.com/design/resources/) WWDC Sessions [Design for Liquid Glass WWDC25](https://developer.apple.com/videos/play/wwdc2025/10156/) [What's new in UIKit WWDC25](https://developer.apple.com/videos/play/wwdc2025/10144/)