Good but they need to make some changes
Great app. It is hard but fun. There are, however, a few things they need to change.
1. The breaks are too short. On your other apps, they have up to 2 minute breaks.
2. There is no explanation. I would like to know clearly what I am doing for the best results.
3. When increasing the exercises, they need to make the change more gradual. It went from 8 to 10 to 12.
SamirSnow about
Runtastic Six Pack Abs Workout