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.
Why is it so difficult for writers of music apps to include simple things like getting their programs to sync properly?
Sebastian is asking on another thread about what synths are lacking on ios platform. Forget the new stuff lets get the existing apps to at least be able to sync properly with each other and that includes iphone apps!!