IK Multimedia has said about porting Amplitube and the iRig to Android, that only Android devices marked as Pro Audio can run them. Apparently Android hardware and the OS have too much latency to use for audio applications. So I’m sure this is true for Cubase too. I think only a couple of Samsung devices fit the bill, and I have read about complaints about them too.
Apple designs their stuff to work with these kinds of apps. And in fact, Macs, iPhones, and iPads come with Garageband installed.