Just like the therapist said, this app is not convenient to use for your clients. Yes it has all the muscles but trying to select them is a real pain you have to pin things to get to the muscle description. Anytime you do anything your viewpoint is covered by A sliding box. Some of the other apps at this company makes really convenient useful and easy this is the primary complaint that most people have I would highly recommend their other one which is muscle 2.
Docj about Muscle System Pro III - iPhone, v3.8