You could be right on that, but I thought he said it did work with other units with a USB port, just not Velocitek.

I don't see the two companies cooperating, because they are after overlapping markets. I haven't checked out Velocitek speedplay recently, but it didn't give you the metrics like Kattack. I used GPSpar, the free one, because I liked it better and it gave me the ability to export the raw lat/long data.