I bought this app for use with my iPod Touch 2nd Gen. It crashed incessantly and was lacking most features, which is why it was pulled from the app store. Finally it is re-released having been rebuilt from the ground up. Guess what? One subtle change that is not advertised is that it no longer works on anything under iOS 4.3, and 4.2.1 is the highest installable iOS for my device. In short I have never been able to properly use an app I paid for and that was originally said to work on my device. Since this was not mentioned I had no reason to stop iTunes from downloading it and deleting the previous version which is unrecoverable.