Hmm. Trying latest liftoff, some slowness vs pwa but it seems to get all the images with no issues. Time will tell I guess in which ones to stick with.
Not sure if same on iPhone but wefwef.app is great on android. Tried jerboa, connect and liftoff, this one is a pwa and it works quite well.
Rock a piss from the other side of the room…
Only one I recall (smartwatch open source)
https://www.pine64.org/pinetime/
Does this fit the bill for you?