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.
Audio routing question
I'm setting up a session using a couple of hardware synths with the External Instrument utility. I'm able to send MIDI, automation, and program changes to the hardware, but I can't find a way to route the audio back to an audio channel. I only see the option to send the audio to a bus.
I would like to sequence and add effects to the external channel, and then send everything to a regular audio channel so I can have the tracked audio in the timeline. Is it not possible, or am I missing something?