This android app was mentioned in
with an average of
You can get it for android here: [link]
And on iOs here: [link]
And in arcade at your local Round 1
Although I don't play GC that much, I recently discovered that GC has an Android version now and would like to check if /r/groovecoaster knows about it. Then what I see is just this empty sub that has been locked down by someone who thought that it was a good idea 2 months ago.
So.. now that you know that GC is on Android (and thus the whole sub), I has accomplished my mission here. See ya!
The only rhythm game I've tried on andriod is Groove Coaster 2. It's a free game involving tapping the screen in time to the music. You can only play the in built music tracks rather than your own, with the option to purchase more tracks for real money. I remember it having a wide range of difficulty settings, but didn't hold my interest for very long due to the simplistic gameplay.