It’s called Hush. A mac app that makes it easier to focus. Over my career, I’ve tried classical music and podcasts, but what stuck was generated noise: brown noise and speech blocker. The challenge was they lived in a browser tab, causing distraction.

Hush lives in your Mac menu bar. Right-click to start/stop noise. Left-click for controls: pick brown noise or speech blocker, set volume, adjust low-pass cutoff. Fully offline, no audio files, real-time generation. Fast, CPU-friendly, Apple notarized.

Download Hush. Pay what you want, $0 is fine. Source on GitHub under MIT. Friends have beta tested since May. Since public last weekend, strangers download it. Try it for a week and tell me if it helped you focus.