Gadgetbridge shows heart-rate and activity when not wearing the watch

I guess this is not the case then, and the pre-processing is supposed to be made by the watch?

Yes, that's correct. I don't believe Gadgetbridge has anything built in.

I was not aware of sleep not being processed either.

We try to be entirely open with everything Bangle.js can/can't do, but we can't just have a list of everything Bangle.js doesn't do out the box. At the end of the day it's at least open, so if you're a developer you can at least get stuck in and have a go at adding the features you need.

I had a look at the Gadgetbridge Bangle.js code and right now it doesn't provide any way of sending the type of activity to Gadgetbridge from the Bangle, so I'm looking at at least adding that, and then maybe the Bangle.js firmware can be changed to report the data at a later date.

edit: I submitted a PR at https://codeberg.org/Freeyourgadget/Gadg­etbridge/pulls/4323