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.
looking for app like polyphase but able to take MIDI input
Is there an app that can take multiple MIDI outputs from a sequencer app and change it in a generative fashion? Delete, add or change notes based on rules set by the user? Polyphase seems to do the multiple and generative parts but does not accept external MIDI, AFAIK. People keep pointing me to look at scripts for Mozaic that would do this - but unsure of the generative capacities of Mozaic.