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.
Discovered last night Vprom...and it's crazy good !
Hello,
I know it's not an app, but it made made me reinstall Logic just for it...
http://www.alyjameslab.com/alyjameslabvlinn.html
There was a subject recently about Mr Linn creator of the Linn Drum machines, and then I've been to this drum machine.
It sounds crazy, I love it...The dev is making crazy music also, I'm waiting for Mac versions of his Elastic pedal also, absolutely massive.
40€ but forget about DM1, Funkbox, or any "Linn Drum" kit on iPad...Hope he'll do a IOS version one day...
Enjoy 
Comments
Yup, I mentioned it in the Roger Linn thread. It's a godsend and a dead ringer. Fyi, there are programs to load for the LM2, Oberheim DMX, and Drumtrax original eproms as well. Here's a link https://drive.google.com/open?id=0B_bYzBMkfzJmSFZxV09DNVJJTXc
Enjoy!
Edit: here's a great review and comparison.
Thanks so much @oat_phipps to put that on my attention
There's also this review, for the v2, and yeah I already installed the Eprom !
And finally, I installed Garageband , it turns out that you can use VST into it, and as it is easier than logic and just to export patterns from there...
http://www.learndigitalaudio.com/linn-lm-1-vst-emulator-updated-vlinn-v2-0-review