Im looking for a stretching program that lets me build a stretch routine based on my personal needs. I tried these four apps below, that receive high marks on the App Store, but each limitations. Maybe the 4 can work together to create a killer app. 1. Virtual Trainer Stretch: Best of the four because it allows you to select any stretch from a home screen and they use a real person in the images. There are 60 stretches, which may meet your needs but most of the stretches recommended by my physical therapist arent in their library. 2. Performance Stretching: Great images and appears to have a large library but the only way to access the stretches is to use their pre-canned routines, which dont suit me (never understood why exercise apps feel they need to build routines for us). Theres no way to build your own stretch routine. 3. Select Stretch Trainer: Allows you to build a stretch routine, but they use poorly animated characters. Also, no way to know how large their libraray is because you can only access by selecting a muscle group first. 4. Start Stretching: Incredibly basic...only 9 stretches and they use animated characters