I spent several hours figuring out the iOS version yesterday. I'm sure there will be improvements, but it's already a darned good app when coupled with a BIAB installation on a PC or Mac as you can save the rendered RT's locally as M4a+ files. You can modify the files (key change, styles, tempos, number of choruses, etc.) and re-render. I've been using BIAB live on a small laptop for years for live restaurant-type gigs. Great to be able to move to iPad or tablet. Hey guys, this thing kills iRealPro. Seems to me a much bigger deal than appreciated.