You need this – AUM - Audio Mixer Review

I’ve had AUM for about 2 years now, I use it every day just about. Always can find an answer to what I need to do, best app for quick jams or coming up with concepts on the fly using all of your auv3 apps. The multiout works fantastic, never an issue. This is. A must have for any serious iPad music producer. Get it today.
Review by Rawlivic on AUM - Audio Mixer.