At this point the app doesn't impart too much information; it helps the casual browser learn what's where, but not how things work. Navigating the 3-D model is fairly intuitive, and the program keeps things simple by starting with a basic skeleton, and letting the user add different systems or organs one at a time. Med students or undergrads cramming for exams are probably going to love it, but it's a neat experience for a run-of-the-mill nerd, too.