Here are some quotes from Wired's GeekDad review of DJ Rig for iPhone, from "Z":
"For me, whether you're an old school crate-digger or a laptop DJ, the commonality is an understanding of both the intricate structure of music and the tools of your respective trade. In the past it was the latter requirement that proved the biggest barrier to entry for newbies, but thanks to the ubiquity of smartphone apps you can now carry a virtual rig with you everywhere you go.""A new player in this ultra-portable DJ space is that fine purveyor of music applications IK Multimedia. With their previous tools for things like guitar processing and beat-making, IK has a considerable legacy of solid products for the musician on the go, and DJ Rig is no exception.""The touch interface for scratching and fading is finely tuned and responsive, and the in-app equalizer can help you smooth out your mix. DJ Rig supports cue points, so creating loops and setting up precise drops become second nature with a little practice. You can even record and export your mixes via wifi, email or iTunes' own file sharing, so the app has value far beyond the live mixing aspect.""DJ Rig's real strength is found in its advanced features. The four 9-button effect pads are easily programmable using a huge bank of existing samples or your own sounds, and they really provide some added flair.""DJ Rig is a solid purchase at the current price point, but to get the full effect — no pun intended — you'll want to invest an additional $4.99 in the Full Effects Suite. Functionality can be further extended by the addition of IK's own hardware solution, the iRig MIX audio mixer, which has been specially designed to interface with DJ Rig across multiple devices. This enables X-Sync, synchronization with any external audio interface, not simply limited to iOS platforms, but obviously entails yet another (and more sizable) purchase.""DJ Rig is modular, scalable and, above all else, functional. From noodling on your daily commute to live digital DJ performance, the app and its related accessories provide a number of intriguing solutions.""WIRED: responsive touch interface, excellent iTunes integration, easy recording/sharing options, tons of effects and sample pads."Read the rest of Wired GeekDad's review of DJ Rig for iPhone, iPod touch and iPad.Learn more about iRig Mix and DJ Rig for your spinning the iOS decks at your next party.