This is excellent if you have a hard time programming drums as you can just copy the rhythm patterns in your sequencer when there is something that sounds good.
As a bonus learning how to program rhythms just by copying the patterns would get fixed in your minds eye for future use.
Not to talk about using it for practicing instruments or to learn drums, hey there is even hand / foot and accent notation.
But there is one glaring omission and that is that it can only play one drum sound at a time...
So for the hi-hat patterns it is still necessary to think a little bit for yourself, the same with the kick and snare... and there is no time signatures except 4/4.
There is bpm though and it can still be of help as it can make the ground work easier for non players. Hopefully it will be expanded upon as for me it could be a lot of help rhythmically.
For free and it is supposed to be publicity but there has been none on my device.
Play Store link: