The App is OK. But it is so much better in an apple device. In apple you can select equipment specific workouts, and other preset, HIIT etc. Which android doesn't have. The app doesn't sync account between devices so I can't switch to my work iPhone. Although it would be better to just have those future in android Also it counts cardio as muscle fatigue as well so if I send 10 minutes in the treadmill it will show my quads as exhausted and never give me leg workouts. So I skip cardio in app