I built this before I had useless watch that just told me the time or that I needed to stand up even though it would endanger my life (room of ceiling spikes). I wondered how I can live like Buck Rogers until I realised it was Dick Tracy who did that stuff, but it's close enough.
You can get it here: https://wristoff.com or direct from the App Store: https://apps.apple.com/us/app/wrist-off/id6745457315.
I launched live from WWDC, where it upstaged a lot of the presentation, see: https://bsky.app/profile/darkpie.bsky.social/post/3lr6r4tr23...
If you have any feedback, please let me know. I'd like it to be fun and useful, but if not both, then neither will do. Bye!