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.
Photon AU is available
Photon AU by anthony saunders
Photon AU - Midi Recorder with Pad playback & Groove
Record your midi performances using this audio unit in your DAW then save/export them as standard midi files via email or directly to other apps.
Load midi files using Airdrop (uses the standalone version) & select your track to import in the AU version.
Up to four pads can be loaded with midi file data & played back with variations in transposition, loudness, tempo, parts defined as start/duration
You can also load a midi file as a Groove file to allow it to replace midi timing or velocity in your recorded/loaded midi file thereby conforming your buffer midi to the groove pattern (eg trancegate effects)
Most controls automated as AU Parameters (quick record, pad controls, pad playback etc)
Full 24 page Manual available here http://amssoftware.org/manual/PhotonManual.pdf
Iphone version coming soon.