One of the big problems with the original Kaossilator was that it didn’t have memory beyond a few seconds, and once it was turned off, you had to start over. Korg came out with a second version of the hardware unit that solved this and added a lot more functionality, but if you are trying to reduce hardware, the iPad app is worth a try. My big beef is that the tap tempo is not native on the front of the app – you have to go to a menu to get it to function.
I have yet to get the AudioCopy function to work, but the direct upload to SoundCloud is very helpful for immediately getting ideas out to your audience… if you are into that sort of thing. I prefer to have a bit more time to edit pieces and incorporate other instruments and processes, but here are two examples: