I purchased Xtreme Mapping almost two weeks ago and have held off writing a review of any kind until now. Regrettably, it is a decidedly negative review due to my utter frustration in the apps IN-compatibility with Traktor Pro v. 2.8.x in SPITE of the claims on both the developer’s website as well as the product details page in the Mac App Store which, to omy mind, is false advertising. Nonetheless, the issue here is that in order to get a so-called compatibility file, one must subit one’s name and email address via a form on the developer’s site. You can submit it once, you can submit it ten times, you can submit it using different email addresses — no response whatsoever, not from an autoresponder, a human, no one. In trying to resolve this issue using the developer sites so-called ‘Xtreme Mapping Support link, I, again, received no reply which, at least, was consistent with my experience trying to request the compatibility file in the first place. I was under the impression that in order to offer apps through the Mac App Store, there had to be some sort of FUNCTIONING means of contacting the developer for support or what have you. I must have been mistaken as there clearly is no one at the switch in this situation and I guess I just have to absorb the $8 loss and be bitter with both Xtreme Mapping and the App Store, alike for allowing developers to offer their products for purchase without having to provide any sort of responsive, active product support.