Yellofier is an iphone and ipad app that i have been having fun with since it was released a few months back. today i saw a video from the people who made it. the duo seem like a nice pair of hip euro granddads. watch the vid to see what yellofier can do:

i saw this on synthtopia

also here is a sample of something i put together in yellofier using some a bleep labs bleep drum and some sound fx: