There isn't much to say about iTurn. It does what it claims, sort of, but iTurn is just too simple an app without enough options or controls to keep it interesting.
After loading iTurn, you're presented with a turntable interface, with the only feature being a volume knob. While playing music on your iPod as you normally would, you can open up the iTurn app and begin scratching the vinyl — much like a traditional DJ and producing the same effect.
Unfortunately, all the sounds come from a preset sample bank which you have no control over — you aren't actually scratching with your own music. That, coupled with the lack of options or depth make for a boring app which lacks in every department.
All of this wouldn't be that bad if iTurn was free, but even at 99 cents I feel I've been taken for a ride.
ITurn is one of those apps, that sounds great in theory but just doesn't live up to expectations.