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.
Reboot iPad between different AUM or Drambo projects?
I reboot my 2020 iPad Pro 12.9 " (hold top and side buttons down until iPad switches off) whenever I'm finished working on an AUM or Drambo project involving multiple auv3 synths and am about to work on another project involving different auv3 synths.
I do this because I have a dim memory of being told that this method ensures all traces of the previous synths are removed from memory, thus allowing the new synths a clean workspace (sorry for the technojargon).
Thinking about it, I've realised that what I'm really doing is sending a little prayer to the iOS gods that they not pester me with unfathomable glitches. My off/on ritual is a talisman against the iPad's evil eye.
It's boring. Do I really have to do it?