There's no doubt that using this program or one like it constitutes cheating, but I'm not so sure that any great advantage is obtained. For example, the L96 Versa, like the Rossa, is more of a mis-ding putter on anything but dead straight putts (which are few and far between) in my experience. Now there may be some advantage on drives (negligible) and approaches, but as some have noted, in any kind of wind ding isn't necessarily king.
I sense a bit of "much ado about nothing" in all this...no great advantage to the user, but downloading and using it, especially for credit games, reveals a tremendous lack of character in the user.