Native Instruments has released an iPhone version of its pro DJ software, Traktor DJ. The new version of NI's DJ software follows the iPad release from earlier this year, at a much lower price point.

If you're accustomed to the skeumorphic turntable-style interface found in a lot of DJ software, Traktor DJ will seem very different - NI has opted instead for a waveform interface that works better on a small screen. Features include direct access to your iTunes music library; song recommendations based on tempo and key; eight DJ effects like Reverb, Delay and glitch effects; crossfader, three-band EQ and filter on each channel; and, if you're a Dropbox user, the ability to sync metadata with Traktor Pro software on your computer.

Amazingly, the software costs a scant $4.99; that's one-fourth the price of its iPad cousin and a mere fraction of the $89 NI charges for Traktor Pro 2.