Lots of exercises and it also let you customize your own exercises. Useful timer and gym session statistics. Easy to setup a new workout. Allows for supersets too! The app is very nice and sync with a web server. The web page is useful; you can manage your workouts and etc, but the web interface is not very well designed. I prefer to use the app only. It would be nice to have an iPad version too.
Jonas F. Dias about JEFIT PRO Workout - Fitness & Exercise Tracking System, v7.30