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 StoreAudiobus is the app that makes the rest of your setup better.
Small set of Behringer Model D samples.
Just got my Behringer D a few days ago., been recording some synth shots this morning directly into audioshare via iRig Pro ... I cribbed off a few of the presets in the Model D app , trying to match sound as close as possible just to see how the app compares to hardware.
Most are dry - though a few have a wet version as well, where I used DDMF reverb and/or Audio Damage Grind.
Been having a lot of fun sequencing them in elastic drums all morning 
Enjoy.
https://www.dropbox.com/s/mqh5pul55gtaupd/ZensBehringerDintro.7z?dl=0