The market is full of calisthenics apps. Some of them claim to get you up to a hundred pushups and charge you 2 USD for just that one exercise! Calisthenics Trainer features 8 exercises to give you a full body workout. At the competition's prices that is a 16 USD value. But the value doesn't stop there. Because unlike those other apps which add reps to your workout based on some predefined formula, Calisthenics Trainer bases your next workout's rep count on the last set of the current days workout. If the program is under working you, it will work you hard the next day. If you are already over worked, it will back off and let you build your muscle. After a few workouts it will find the perfect groove for you.