Not just for drummers...

This is THE best metronome app out there. Its made by a drummer and is great for drummers beginner to professional but I think its great for all musicians: instrumentalists and vocalists who want to improve in the area of rhythm. And the Practice Log feature makes practicing and progress a lot easier to keep up with. You can also make and save detailed notes about each practice session and what was worked on.

DeShawndre about PolyNome: THE Metronome