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.
Bluetooth MIDI Keyboards
I bought an Akai Bluetooth but they sent me the USB wired version. I believe the Akai is out of production.
So, I keep checking for a Bluetooth Keyboard to have handy for keys, pads, knobs, transport and last night I saw this new vendor:
It arrived this morning and is pretty similar to the Akai in terms of key action which is reasonable.
The pads are velocity sensitive.