Koushion is a dedicated MIDI step-sequencer. It looks really cool, even though it lacks Virtual MIDI support. There are a lot of people that feel any synth is improved by the addition of a step-sequencer, so this is a nice way to make that happen!
I tried to review it, but I ran into a couple of show-stopping problems. The first being that I can't use my M-Audio UNO (USB-MIDI adapter) due to the way the Uno is sending clock sync. Bummer. I tried to run a WIFI connection to my computer, but there was some major bug going on with their Windows Koushion MIDI controller software (required proprietary software, it doesn't use rtpMIDI like most apps). The app would be running fine on its own, but as soon as I got a connection to my Windows computer, the iPad app would crash! Every single time, over the course of nearly an hour of testing. It would send notes just fine for a bit, but if I pressed anything on the App screen (like octave shift) it would crap out instantly.
It has been updated, but it doesn't look like it addresses any of my problems.
- Fixed bug with saving channel mappings
- Quantization now takes effect immediately upon resuming stopped playback rather than waiting until the end of a complete sequence
I am assured, by Kudzu Creative Group, that my experience is just a fluke. No one else has reported these crashes, so maybe it is a new bug with iPad 3s.
Here is video evidence from Chris Stack that it does work, and it is kind of awesome when it does!