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.
Audiobus works perfectly fine with Rebirth (tempo midi slave) Drumbox (tempo midi master) and Sunrizer (sync to Drumbox), all these Apps simultaneously recorded in DAW. No latency (2.8 ms). Sync is fine. Everything is smooth as silk : well done and thank you for this great job !
Setup: iPad 3, 32Go, WIFI. using iOS 6.0.1