Very Good, Could be Great

This is an excellent app for learning the muscle system. You can strip the muscle layers right down to the skeleton, one layer at a time. In addition, it shows you how muscles bend and contract in movement. Theres a searchable index, muscle chart, smart body navigation, identifying pins, etc. This isnt a kiddy app, this is the real deal.

If they could add some limited posing options and more control over rotation angles, I woud give it a 5 out of 5. Could be a popular resource for artists with a few tweaks.

Palex 1980 about Muscle System Pro III, v3.0