DJ Rig uses a similar pricing model to IK Multimedia’s other iOS apps: a basic version available on the App Store for $2 with additional features available via in-app purchase, in this case as a $5 “Pro Pack.” The current version of the app is designed specifically for the iPhone and iPod touch, requiring iPad users to run it in 2X mode. The app itself can operate in both portrait and landscape orientations with an appropriate user…