ios-skills

iOS accessibility applied — Dynamic Type (built-in styles + AX1–AX5 sizes, @ScaledMetric, custom-font relativeTo, AX5 testing), VoiceOver (labels/values/hints/traits, element grouping, reading order, rotor, decorative hiding), color & contrast (WCAG AA 4.5:1/3:1, Increase Contrast, Differentiate Without Color, never color-only), 44pt touch targets, motion/transparency settings, alternative input (Voice Control/Switch Control/Full Keyboard Access), and auditing (Accessibility Inspector + performAccessibilityAudit). Use when building, reviewing, or auditing the accessibility of any native iOS/SwiftUI screen.

iOS app icon + App Store presence applied — the icon design grid (single focal mark, no words, full-bleed, no baked mask), the iOS 26 Icon Composer layered/Liquid Glass system (light/dark/tinted/clear from one 1024 master), current App Store Connect screenshot device sizes + counts, app preview video specs, and product-page metadata character limits (name 30 / subtitle 30 / keywords 100 / promo 170), plus honest ASO. Use when designing an app icon, packaging App Store screenshots/metadata, or planning a product page.

iOS Swift Charts applied — picking the right mark for the intent (trend→line/area, comparison→bar, composition→stacked/sector, single value→Gauge/ring), the Chart + Mark / axis / scale / interactivity APIs, the zero-baseline honesty rule, charts-that-animate-on-data-change, the SwiftUI Gauge and custom-arc ring, and free + hand-authored chart accessibility (auto AX tree, AXChartDescriptor, Audio Graphs). Use when adding, choosing, or reviewing any chart or data visualization on a native iOS screen.

iOS semantic system colors, dark mode, and material levels per Apple HIG (iOS 26 shipping baseline; iOS 27 / WWDC 2026 current cycle). Covers why you never hard-code system color values, the system vs grouped background sets, label/separator colors, dark mode base-vs-elevated + the 4.5:1/7:1 contrast floors, the four standard material levels + vibrancy, Liquid Glass color rules (incl. the iOS 27 v2 material tuning + user transparency slider), and Display P3. Use when choosing colors, backgrounds, or materials for any native iOS screen.

Apple HIG component rules for native iOS 26 — bars (tab/nav/toolbar/search incl. floating + concentric corners), buttons (44pt hit region, prominence, roles, no destructive-primary), menus/pull-down/pop-up, toggles/pickers/segmented/sliders/steppers/text fields, lists & tables, sheets + detents, alerts vs action sheets vs popovers, modality, progress/gauges, with the SwiftUI mapping. Use when choosing or reviewing any iOS control or presentation.

Apple HIG behavioral patterns for native iOS — onboarding, launch screens, loading, modality decisions, feedback, settings, search, privacy & permission flows (purpose strings, priming screens, ATT), account deletion, in-app purchase, ratings, notifications — plus motion/reduce-motion, haptics (UIFeedbackGenerator patterns), and the accessibility floors (contrast AA, touch targets, Dynamic Type 200%, VoiceOver). Use when designing any flow, permission prompt, empty/loading state, or feedback moment on iOS.

iOS gestures and haptics applied — the standard system gestures (tap, long-press, swipe, pan, pinch, rotate, edge-swipe back) and the rule never to override them, the SwiftUI gesture APIs (.onTapGesture / LongPressGesture / DragGesture / MagnifyGesture / RotateGesture and composing them) plus the row-level affordances (.swipeActions, .contextMenu, .draggable/.dropDestination, .refreshable), and the haptics stack — the three UIFeedbackGenerator families (impact / notification / selection), Core Haptics for custom patterns, and SwiftUI .sensoryFeedback(_:trigger:) — with HIG best practices. Use when adding any gesture, swipe action, or haptic to a native iOS screen.

iOS layout & spacing for iPhone — the 8pt grid convention + 4pt sub-grid, real Apple layout numbers (16/20pt system margins, safe-area insets, 44/49/50pt bar heights), the 44pt touch target, building dense low-scroll layouts with LazyVGrid/Grid + GridItem (2-up/3-up rules), SwiftUI's adaptive default spacing, and the iOS 26 floating-chrome layout model. Use when laying out any iPhone screen, choosing margins/gutters, or building a grid.

iOS 26/27 Liquid Glass design language + the SwiftUI APIs that implement it, sourced from Apple's WWDC25 sessions 219/323, the WWDC26 Liquid Glass v2 refinements, and developer.apple.com. Covers the functional-layer-over-content mental model, regular vs clear variants, glass-on-glass/over-tint don'ts, the floating tab bar, scroll edge effects, concentric corners, the user transparency slider, the appearsActive inactive-window dimming, accessibility behavior, and a verified-vs-community API table. Use when building or reviewing any iOS 26/27 native screen's chrome, materials, or glass effects.

iOS motion applied — the SwiftUI animation model (withAnimation, .animation(_:value:)), the modern spring-first defaults (.smooth/.snappy/.bouncy with duration:/bounce:, .spring, interpolatingSpring), transitions + matchedGeometryEffect + the iOS 18 .navigationTransition(.zoom), PhaseAnimator/KeyframeAnimator, rolling counters via .contentTransition(.numericText()), SF Symbol .symbolEffect, scroll-driven .scrollTransition/visualEffect, iOS 26 Liquid Glass morphing motion, haptics-synced .sensoryFeedback, recommended iOS timings, and Reduce Motion fallbacks. Use when animating any state change, transition, or micro-interaction on a native iOS screen.

SF Symbols usage (weights, scales, the four rendering modes, fill-vs-outline variants, animations, SF Symbols 7 gradients/Draw + SF Symbols 8, accessibility labels, version-gating) and iOS 26/27 app icons (layered Liquid Glass design, Icon Composer + Icon Composer 2 refraction, square-unmasked layers, the six appearances, specs) per Apple HIG. Use when picking icons, choosing rendering modes, or producing an app icon for a native iOS app.

iOS typography applied — the SF family system (SF Pro / Pro Rounded / Mono / New York), Dynamic Type built-in text styles + their point sizes, weights to prefer/avoid, type pairing and label-vs-value hierarchy for a minimal health/nutrition app, tabular/monospaced digits for data, and the concrete SwiftUI font APIs. Use when setting any type on a native iOS screen or building a type scale.

iOS home/lock-screen widgets and Live Activities applied — WidgetKit (Widget, TimelineProvider, TimelineEntry, reload policy + refresh budget), the system & accessory widget families, interactive widgets via App Intents, ActivityKit Live Activities (lock-screen + Dynamic Island compact/minimal/expanded, push updates, 8/12-hour limits), Control Center & Lock Screen controls (iOS 18), StandBy, iOS 26 Liquid Glass widget rendering + tinting, and the iOS 27 / WWDC 2026 Liquid Glass v2 retune + user transparency slider + Live Activities on Mac/CarPlay, with the concrete WidgetKit/ActivityKit SwiftUI APIs. Use when designing or building a home-screen widget, a Lock Screen accessory, a Control Center control, or a Live Activity / Dynamic Island for a native iOS app.

iPhone-specific Apple Human Interface Guidelines, iOS 26 (Liquid Glass) baseline through iOS 27 (WWDC 2026, Liquid Glass v2) — the floating tab bar and how content scrolls under it, scroll-to-minimize nav/tab bars, resizable iPhone apps, navigation/sheets/presentation detents, SF Symbols + Dynamic Type + safe areas, control styles, 44pt touch targets, and the concrete SwiftUI modifiers that implement each. Use when building or reviewing any native iPhone screen; pairs with platform-conventions (cross-platform) and components-and-states.