GoWorkout

GoWorkout helps you plan, and track daily workout routines for all your main muscle groups. Get stronger, lose weight or gain muscle whether you go to gym or workout at home.
The app has exercises for your abs, chest, legs, arms and butt as well as full body workouts. It allows you to create custom workouts complete with sets, reps, weight and distance. The full body muscle diagram allows you to view your recovery and target muscle groups for optimum fitness.
Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/