Reader Adrian Craig shared a tip on using MIDI with the new Novation Launchkey app for iPad:
After some tries and “inspired” by one little note I’ve seen I tried to unleash Novation Launchkey app. Here are the results:
MIDI chan.1:
#CC7 – global VOL
#CC21-28 – 8 parameter knobs
MIDI chan. 10
Notes: changing Favourites (1-8), switching between “Points” (octaves 2 and 3, figure out by yourself) 
Novation Launchkey is a free download from the App Store – so check it out and let us know what you think of it. And thanks to Adrian for the tip!
Additionally, CC 41-48 are assigned to the invisible amplitude and filter envelope ADSR controls.
Lorien – thanks for yuor tips