Is UTC compatible with iWatch, Coros or Polar?

Right now, UTC is only compatible with Garmin and Suntoo. We are working on adding more
watches.
If you don’t have a Garmin or Suntoo, you can still use the key features of UTC. The one thing you
can’t do is sending workouts to your watch. UTC will still optimize your training plan
automatically and you can still use WhatsApp to provide feedback.