This is basically the "Breathe" meditation helper from the mindfulness app on the apple watch (not sure if Android/WearOS has something similar…) Useful if you don't have one but the watch version is a bit handier for my use.
Indeed seeing this reminded me of the Breathe app, which was renamed to Mindfulness and has Reflect and Breathe exercises. It’s nice because you can configure the breathing rate, the visuals are pretty nice looking, and I even like the haptics.
