Not a bad program.

EDIT: this app keeps crashing on iOS7 and makes the device unresponsive for ~10 seconds.

This is not a bad program and the app has a decent design. But if you need music from any other app other than the native music app, its going to be a terrible user experience. While playing music from third party apps, this app does not pass the control back to the player and while this app is giving commands, youll have to keep switching apps to play music. Examples of third party music apps this wont work with:
- Pandora
- iHeartRadio
- Saavn
- City 101.6

Since I already know this program very well and if there isnt a fix posted soon, Im deleting the app!

Manoj J about SitUps to Six Pack - 0 to 200+ SitUps Training