I am testing this on a lenovo android tablet (4.03) and a galaxy note 2 phone (4.42)
Whilst it looks very useful at first glance, I havent been able to use it on either device for more than about 10 minutes before things start to go awry. The play button has gotten stuck on on several occasions, and the audio system screws up not long afterwards requiring a cubase restart. A bit annoying really.
It is not a valid competitor to touchdaw ($4) yet.
My feeling is that this was rushed to market without a proper beta program.
Perhaps I will try it again in a year.