PolyRhythm was developed for all professional musicians, regardless of 
instrument, whether composing, performing or conducting!

The app produces the most common rhythmic overlays (such as 5:3) using 
two different clicks accompanied by a display of the score.

Available rhythmic overlays range from 3:2 to 13:4 on a systematic 
basis with decadic BPM-steps for best study results. A regular metronome (also with decadic BPM-steps) is included.

All sounds are based on loops in order to achieve maximum accuracy. Please make sure that the Ring/Silent switch of your iPhone, iPod touch or iPad is in ring mode (otherwise there will be no sound).

"PolyRhythm, your precise metronome for complex rhythmic structures!" - Wolfram Winkel, author and co-developer, lecturer for rhythm and 
percussion at the University of Music and Performing Arts Munich

A lite version and more:
www.fiveoverthree.com