A full version app for Windows, by Real Bodywork.

Muscle and Bone Anatomy 3D is an educational app that provides five different ways to learn about the human musculoskeletal system. The app includes a 3D viewer, a dozen body actions, six types of quizzes, and two types of media.

The 3D viewer allows you to control a 3D view of the body, with labels that lead to full-screen images of 145 muscles each with the name, action, origin, insertion, nerve supply, and comments for each muscle. The viewer also includes all the bones with detailed landmarks.

The best way to learn about muscles is to group them into their actions.