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.
Taylor Holliday interview
there's an interview with Taylor Holliday on Synthtopia:
cool, did not know...
"Before Audulus, I worked at Pixar Animation Studios, where I contributed to their in-house animation software."
"Taylor Holliday: I LOVE the iPad Pro hardware and it’s a great platform for Audulus. The extra room feels really nice. Music software on iOS could become ever more compelling because of iPad Pro.
However, Apple may have hobbled the iPad Pro. To make pro apps a sustainable business on iOS, developers need to be able to offer discounted upgrades, a feature Apple currently does not allow for in the App Store.
Developers also need a way to do trial versions (they are currently prohibited by Apple)."