If it’s a promotion, it’s sailed under the radar so far.
Native Instruments‘ popular Traktor DJ app for iPhone, iPod and iPad has recently been cut down to a price of $0. That’s right: the latest iteration of its app, as of July 8, 2013, is now available for free.
DJTechTools (which as far as I know noticed this first) speculates it’s a combination of an anniversary promotion for Apple’s AppStore as well as to promote NI’s Traktor Kontrol Z1 which was just launched a week ago.
All you need is an iTunes ID and it’s yours.