Gadgetbridge 0.26.0 has just been tagged and will show up on F-Droid soon. The highlight of this release is the added feature that allows to export the activities (workouts) recorded with the Amazfit Bip. Source: Gadgetbridge 0.26.0: free your workouts on the amazfit bip — Freeyourgadget blog
Amazfit Zepp E has 5ATM water resistance that allows it to track activities like swimming. Source: Amazfit Zepp E Smartwatch With Up to 7-Day Battery Life, SpO2 Monitoring Launched | Technology News