Review, write, and fix SwiftUI animations. Apply modern animation APIs with correct timing, transitions, and accessibility handling using Swift 6.2 patterns.
| State-driven | withAnimation, .animation(:value:) | Simple property changes | | Multi-phase | PhaseAnimator | Sequenced multi-step animations | | Keyframe | KeyframeAnimator | Complex multi-property choreography | | Shared element | matchedGeometryEffect | Layout-driven hero transitions |
| Navigation | matchedTransitionSource + .navigationTransition(.zoom) | NavigationStack push/pop zoom | | View lifecycle | .transition() | Insertion and removal | | Text content | .contentTransition() | In-place text/number changes | | Symbol | .symbolEffect() | SF Symbol animations | | Custom | CustomAnimation protocol | Novel timing curves |
Implement, review, or improve SwiftUI animations and transitions. Use when adding implicit or explicit animations with withAnimation, configuring spring animations (.smooth, .snappy, .bouncy), building phase or keyframe animations with PhaseAnimator/KeyframeAnimator, creating hero transitions with matchedGeometryEffect or matchedTransitionSource, adding SF Symbol effects (bounce, pulse, variableColor, breathe, rotate, wiggle), implementing custom Transition or CustomAnimation types, or ensuring animations respect accessibilityReduceMotion. Source: dpearson2699/swift-ios-skills.