Hi dying,
please have a look at Cubasis, our multitouch sequencer available for the iPad:
Cubasis provides unlimited audio and MIDI tracks and up to 24 physical inputs and outputs (depending on the device in use) and much more.
Regarding your request, Cubasis allows to set individual inputs and outputs per track. Furthermore it is possible to assign the metronome to an individual output.
So far Cubasis does not support tempo track nor is able to import Cubase project files.
However you can export Cubasis projects to Cubase.
Hope that helps to answer your questions.
P.S.:
Please note that you’ve used the Cubase iC Pro forum (our remote control app for Cubase) to post your request! Please change to the Cubasis forum!
Thanks
Lars