If you've ever built a SwiftUI app that technically works but just looks off, this skill fixes the spacing, typography, and color decisions that separate polished apps from AI slop. It enforces a base-4/base-8 spacing grid, a tight type scale with clear weight hierarchy, and semantic system colors instead of hardcoded opacity soup. The guidance is opinionated and specific, like "hero numbers should be 36-42pt at light weight" and "limit yourself to 2-3 opacity values maximum." Use it when building iOS widgets or any native Apple UI where you want things to feel right instead of approximately correct.
npx skills add https://github.com/arjitj2/swiftui-design-principles --skill swiftui-design-principles