I was using the free version which allows you to scan your Mac on command. I decided buy for $40 annual fee the full automatic scanning version. Don't do it! A process called RTProtectionDaemon will suck up your machine. Many folks have this problem. Hard to imagine the even tested this. I took me a while but I finally got it uninstalled. (You have to download the install package - inside you have an uninstall choice. Bad product.