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.
Confusing IAP options
Was just checking how to demo the current update and the price of IAP and came across this list. Bit confusing, ad not sure if some of this is down to Apple's error. Thought to make @Michael aware, just in case he was not already.
What's with the discount options? Are they a limited-time offer?