dArrAnAsAurus mAx is not good at counting, but he is informative in this 23 minute long 7 Minutes to iOS MIDI Mapping Mastery.
Although the first video is all about getting Kieth McMillen's QuNeo setup for use in Animoog, the principles are useful for all device and app combinations. The second part looks at MIDI Learn in BeatMaker 2, and includes a demo controlling Loopy HD via MIDI.
G.A.S. Warning: This will make you want a QuNeo. I've never seen anyone setup a QuNeo like that for Animoog, it looks like fun!