Not sure if they also have an Android app; note that this is merely a searching tool, not sure if it only returns mobile friendly sites. Note also that it was developed in 2010, so not sure if all sites are still live.
Works with older versions of iOS.
Android apps to support blooms taxonomy; all are content free, so can be used in multiple situations.
Kathy S. is American, so it's possible that some of the apps are only available in the US.
Getting a book interactive - but only on some platforms, not all of them. (Nook & iPad) Not sure if you can get (Though you can get a Nook app for your desktop & Android, just not sure if the more interactive books work in them, not yet tested)