This is a solid reference for implementing haptic feedback in iOS apps, covering both the simple UIFeedbackGenerator APIs and the more complex Core Haptics patterns. The skill walks through when to use which approach, how to sync haptics with audio and animations, and includes AHAP file examples for custom patterns. The Causality-Harmony-Utility framework it references gives you a practical lens for designing feedback that doesn't feel gratuitous. Worth noting that debugging haptics requires actual devices since the simulator can't replicate the physical feedback, which the guide addresses. If you're building iOS interfaces and want them to feel as polished as first-party Apple apps, this gives you the technical foundation to get there.
npx skills add https://github.com/charleswiltgen/axiom --skill axiom-haptics