My school got a bunch of iPads for the AP Econ students to use. I found a really awesome app for note taking but its paid so most people wont get it. I got it and signed in on my friends iPad and installed the app for her to use without paying for it. I was wondering how many times i can do this. I know it used to be you could authorize 7 different computers to play music you bought off the iTunes store. Is this the same concept?