This app could be really useful for collaborative homework. Sketchshare although it requires Game Centre (which will invariably be blocked in school) it won’t be blocked at home. So collaborative projects, that need to be developed live “on the fly” via annotations/drawings and images can be created. The fact that audio is also live means that real speaking a listening across the 4 iPads supports the process.
The saving of transparent PNG versions of the files will also be cool for other apps like Keynote and Pages!
I can’t wait to use this app in and out of school!