Algoriddim’s djay, aside from being a very nice Mac app, has demonstrated that an iPhone or iPad can be a serious DJ tool. For many DJs, they’re just a handy, portable backup or compliment to the full-powered DJ setup, one that nonetheless gives you familiar tools and options. But they really can do most of what desktop software can do, and you can add on physical controls with accessories.

New versions of djay are nicely optimized for Apple’s newest hardware (iPhone 5) and software (iOS 6, which also works with a lot of existing iOS gadgets).

As such, they also reveal a lot of what is now possible on the latest versions of Apple’s platforms:

  • [iOS 6] Complete iTunes store integration. Browse through songs, preview (with rewind/forward) what they sound like, and purchase within the app, even including find-as-tyou-type search.
  • [iOS/iOS 6] Work with multichannel audio (previously in iOS), and multiple routing points (new to iOS 6). There are actually two points here. You have the ability to support multichannel audio interfaces in djay, previously unavailable, and you also can route headphone output and main output separately – so even without a multichannel interface, you could use, say, both the headphone jack and an HDMI or USB out. That’s a big deal for DJs, because finally, you can pre-cue tracks, but also should mean apps with multichannel recording and playback, other tools with separate cueuing, and, heck, even iPad-based surround rigs if you want them. These work with multi-channel USB audio interfaces and accessories, HDMI audio, and docks. (Android has some similar features here, too – HDMI is looking great on mobile.) Clarification: I was a bit unclear on the multichannel and multipoint functionality.
  • [iPhone 5] 4G/LTE support. Now, downloading music off a mobile connection is starting to look practical. Wedding DJs, your phone has arrived.
  • [iPhone 5] 4″ retina display. This is a no-brainer we should see in iOS apps soon.