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.
Beatsurfing 2 | The Beat performers Best friend | haQ attaQ
You need to check this one out! Beatsurfing 2 is one of the most fun and useful iOS music apps that I've had the privilege to work with so far. What makes this app so special is the way that you interact with it's instruments, essentially "surfing" over them with your fingers. It's a total game changer when it comes to beat making or live performance music apps and If you're into music that type of stuff, then you cannot simply afford to miss this one!
Seriously, it’s one of the most fun and useful iOS music apps I’ve had the pleasure of using!