I don't know if there is a catch persay but I went to their website and they want to know an awful lot about you before you can dowload. Stuff like your full name, address, phone number, that kind of stuff. Also it is illegal to make a copy of their software. Not even to put on another computer you own. You can't even upgrade your processor. You have to re-download the software if you ever do. It seemed pretty rediculous to me so I declined the agreement. I figure that once I download something, even if it's free, once it goes on MY hard drive it's mine, and I can make a copy if I want, or at least reinstall the software after a crash or something. As I understood it you can't even make a Ghost of your hard drive if you have this on there. No thanks.