Polynome - The Original

Polynome is an iOS app that allows you to visualize and hear complex rhythm patterns. You can set up to 4 individual rhythms, each being from 1 to 11 beats per measure. You can adjust the tempo (beats per minute) from 20 to 220. For each line you can set the following:

On or Off

Beats per measure
Note that the first enabled line is what the tempo refers to.

Color of light