When you're designing an app for multiple Apple platforms, this gives you the platform-specific guidance from Apple's HIG. It covers iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, with references for each platform's input methods, navigation patterns, and design conventions. The decision framework is smart: it walks you through identifying the use context (on the go, at a desk, on the couch) and matching the right input model instead of just copy-pasting designs across platforms. Use this when you need to adapt an iPhone app to iPad, understand how tvOS focus navigation works, or figure out what spatial computing means for visionOS. It's opinionated about not replicating designs but translating intent, which is the right approach.
npx skills add https://github.com/raintree-technology/apple-hig-skills --skill hig-platforms