My recommendation would be to have a gadgetbridge supported device (and read how well supported it is, some devices need some convoluted pairing process the first time). It can do so many things by now it's becoming silly. I love this app.

What devices do you have? Check if they are suppprted by #gadgetbridge gadgetbridge.org/

I assume you did a search on f-droid and saw plees-tracker and it didn't work?

Track sleep how?

I know smartwatches track your sleep when you wear them at night through sensors, how would you do it with a phone, or do you mean tracking in a different way?

@cristian64 No idea but I found this on #fdroid f-droid.org/en/packages/hu.vmi…

I think your best chance to get something without 3rd party closed software is to get a ESP32 chip with accelerometer, mic and use AI to vibe code something to record events.