I use most of them. Heart Analyzer (and Health Hive) have much information for free. Also in AltiBarometer Trend Tracker there are interesting functions for free.My must have apps to make a Garmin from the AWU:
- Athlytic
- HealthFit
- Heart Analyzer
- WorkOutDoors / Footpath
- RunGap
- Carrot / Alti-Barometer Trend Tracker
Unfortunately, all of them are paid or subscription based