Originally Posted by PaulChatter:
“Well it shouldn`t be just on certain tablets it should be on all”
If I had to guess, I'd say it all hinges on the "and you can record yourself" aspect of the app. Neither your tablet nor the Nexus 7 (2012) has a rear-facing camera, or indeed a camera of any decent spec, whereas all of the other devices that seem to pass the compatibility test do have a decent rear camera.
If you're going to record yourself for the show (and Lord only knows why you'd want to, but I haven't seen the show so I can't judge), presumably they want to guarantee a certain level of recording quality that the B1 certainly cannot provide, and that the N7 (2012) would also struggle with.