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.
IK Multimedia's MODO Drum for iOS? New version of Sampletank?
Since you ported Hammond B-3X to iOS any plans to port MODO Drum?
Regarding a new version of Sampletank:
We understand that making an app AUv3 requires a complete re-write.
So why not, instead of making the current Sampletank for iOS AUv3-compatible, make a whole new version based on Sampletank 4 with Auv3?
All the IAPs in the current version should be available to buy in the new one.