I’m in radiography school and downloaded this for practice. I started out well with the quiz format, which I prefer for learning. My complaint about the quiz format is that it is too easy. For instance, if it is asking about a wrist bone, it should list three different wrist bones. Instead, it might list one wrist bone and two obviously wrong bones. That is useless. Also, if I don’t have time to do all of the quizzes, and then I exit XrayAnatomy and come back in a few days, XrayAnatomy makes me start all over again. I am unable to pick up where I left off. Finally, it wants you to subscribe, but does not tell you what you get if you subscribe. Will I get to organize my quizzes better? Pick up where I left off? Choose which radiographs I would like to practice? What do I get for $4.99? And then when I decided to contact the company through XrayAnatomy , the email popped up with no address…thus no way to contact the company. So yeah, I guess this is a dead end for me because I refuse to keep doing the same radiographs over and over to try to reach the ones at the end of the list. And I refuse to pay $5 without being told what features I will get for the money. It would be a nice app if these things were fixed.