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.
The END of IAA? | Inter App Audio Deprecated | haQ attaQ
Apple is deprecating Inter App Audio aka IAA in iOS 13 in favour of AUv3! So it seems that the IAA protocol has hit its end game, but what does that really mean for iOS based music producers?
To answer this question I got in contact with several prominent app developers, who's apps most mobile musicians know about, due to their importance for the iOS music production scene. Want to know what the future holds?