READ FIRST: If you're looking for a tap-to-splash app, this is not the right app! Erratic Drummer is an automatic drum pattern generator for progressive musicians. You can customize how drum patterns are generated and played back based on tempo, length, pattern density, as well as modifying presence of different drum instruments in the pattern.
Either plug your guitar in, lock on a drum line and start jamming, or put your headphones on and let the flow of diverse drum lines give you creative ideas!
If you find a bug, or have comments about the app, let me know via firstname.lastname@example.org!