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.
Multitrack DAW and Nlog troubles
I still have to figure out how to record in Multitrack DAW, couldn't make it until now (source on Thumbjam and all but just recording a blank track, with 2 tracks per instrument I end up with only one track automatically created in named Thumbjam instrument 2), same thing using Drumjam as the input despite in both case I have the Audiobus control panel and pushed the record button (turned green) then play button (record turned red). When I stopped and went to Multitrack DAW to hear the result, no joy, a blank track in play mode...
As for Nlog, using it in Audiobus (as an input or a filter) literally shut its sound down (the app sound mysteriously disappeared, volume and all unchanged). Nlog did not even sound after I closed everything and reopened it... I came back a long time later (more than an hour) when I tried again (and believe me I tried and tried before this...).
Same kind of thing with Jamup Lite, opening it as a filter makes it either not starting at all (background image of the app appears then the screen goes back to Audiobus) or silencing the audio path (despite the arrows blinking to indicate everything is connected...)
Am I missing something? (I'm probably)