As you can download directly into the application drum notation from the internet and import it into application that allows for Midi import and so have professional sounding grooves already made.
Or just Notate your own in Midi it also can save it as Sheet music and is integrated with Software that existed for many years for PC.
It requires Android 4.0 and and a 7 inch or bigger tablet-
On the website the developer says that if you want it for smaller screens to contact them.
I guess especially nice if you are a drummer.
Dont understand the pricing as on the website you can download a Android version for 14.95$ and the PC version for 29.95 $ and both for 39.95...
But if you go to the Playstore page you get the Android version for free-
so just try it and make them beats go mjiauu.
Would be pretty pissed of paying money for the app and later discovering that the Playstore download is for free... But what do I know?