Watch app is a joke
Numerous problems with the watch app, it randomly: doesnt turn on the heart rate sensor; doesnt turn off the heart rate sensor; takes 5 seconds to a minute to update, making you lose time in the exercise; crashes the phone app, making you lose progress; almost never saves the health data or saves 3 copies of the same workout. The main app itself is nice and the training satisfying, but theres limits to how buggy things can be.
jbozanowski about
Freeletics: Workouts & Fitness, v3.1.2