SwiftUI Excellence Playbook

Tactical guide for designing and building world-class SwiftUI interfaces—the kind that feel at home next to Apple's own apps.

Six Non-Negotiables

1. Content first — UI is a frame, not the painting
2. System components unless measured reason not to — buy accessibility, platform behavior, design updates for free
3. Design for states, not screens — every screen handles: loading, empty, error, offline, partial, permission denied
4. Accessibility is a constraint — Dynamic Type, VoiceOver, Reduce Motion/Transparency, Increased Contrast
5. Performance is a feature — "feels instant" interactions, instrument when hitches occur
6. Coherence over cleverness — best interfaces feel inevitable

Quick Reference: ADA Rubric