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.
Oi! Grandad granular synth coming to iPad?
Oi! Grandad is a desktop granular synth plugin with 4 sample based voices. It has 12 independently triggered and complex modulators, per voice delay and a load of controls for granulation of each voice. Rick, the dev, has just released an update in beta which adds independent playheads to the voices for even more possibilities. There's a free version available on github but Rick has a Gumroad store where you can buy a 'pro' pack with a load of samples and presets and help fund development - he's got a few other goodies on github and Gumroad too which are worth checking out.
Anyway - he's thinking of making an iPad version (he doesn't think the interface will translate well to anything smaller) of Oi! Grandad and is interested in users views - in his words 'Let me know if you have any thoughts regarding UI, layout or features that might be useful for IOS users, please!'
It's Rick's first attempt at programming a mobile app and it may be a while in development but I think his stuff would work well on an iPad. I'll invite him to the forum so he can take part in discussions...