Had a quick glance. This looks useful to me.
FYI, at the bottom of the home page, the self host link: https://docs.kitchenowl.org/getting-started gives a 404

https://docs.kitchenowl.org/self-hosting/ should be the link.

It is still the best "dumb" smartwatch out there. Long battery life, physical buttons, no touch screen nonsense and it just works.

I am still rocking my Pebble2 but unfortunately the silicon buttons are starting to deteriorate. It will be difficult to make repairs/upgrades to the watch, but I don't see a 1to1 replacement for it.