PrepZilla manages the impossible, to combine student study revision with fun – there’s not many educational apps that can do that. We will be reviewing PrepZilla in due course, but first we wanted to find out more, behind the scenes and background to this app. Read our exclusive interview with the developers of PrepZilla, gWhiz below… PrepZilla is free and you can download it here.   The Beginning JC – Please explain how your app was originally thought of and what were your thoughts behind the marketplace, specifically? gWhiz – Over the last few years we’ve learned a lot about education, and specifically test prep, from our customers. They tend…