The Windows Phone app, which has gone free next as myAppFree app of the day is Personal Workout Scheduler.
This app provides more useful features to schedule yore daily workouts. You will love its simplicity!!!
Personal Workout Scheduler Features:
1. Create or customize your own workout schedules
2. Add as many activities to workouts
3. Sort activities within workout
4. Activities includes:
(a) Activity duration
(b) Number of sets
(c) Rest interval between each set
5. Pause/Resume, stop workout scheduler at any point
6. Built-in buzzers alerts you every time a new activity starts/ends