macOS App Design & Development

Guide for designing and implementing native-feeling, "good Mac citizen" apps: fast, elegant, accessible, and deeply integrated with macOS workflows.

Two Rules That Beat Everything Else

1. Prefer system components and conventions over bespoke UI—fastest path to "feels right on Mac"
2. If you customize bars, backgrounds, borders, or control chrome: stop and justify it

Quick Reference: Mac Citizen Checklist