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.
Ioniarics by Abigail Macfarlane (Pagefall)
Polyrythms are an essential part of music the world over but can be quite tricky to learn to play and are annoying to program on a traditional grid. Ioniarics makes it really easy to set up complex rhythmic patterns and use them to generate interesting sequences.
As with all Pagefall software a number of features allow you to push the creative side of things - probability filters and a west coast style function generator stop repetitive patterns from becoming stale.
Ioniarics provides a straight forward way to add rhythmically complex sequences to your music