Audiobus: Use your music apps together.
What is Audiobus? — Audiobus is an award-winning music app for iPhone and iPad which lets you use your other music apps together. Chain effects on your favourite synth, run the output of apps or Audio Units into an app like GarageBand or Loopy, or select a different audio interface output for each app. Route MIDI between apps — drive a synth from a MIDI sequencer, or add an arpeggiator to your MIDI keyboard — or sync with your external MIDI gear. And control your entire setup from a MIDI controller.Download on the App Store
Audiobus is the app that makes the rest of your setup better.
AUM MIDI CTRL preset change
This is a very handy ability to be able to load a preset by sending a specific predetermined note/PC/CC through MIDI CTRL to an AUV3 synth/effect to change its preset. I did a quick inventory of the apps I’ve purchased, and about 25% have exposed their presets so the feature will work. Hopefully as apps get updated, those developers who haven’t done it yet will include it in their next release. I was surprised to see that some of the more respectable devs have not.