I think it is a scam myself. Firsyt it will run a free scan and find all kind of problems mostly registry problems then you must purchase it to clear the problems.
I ran the scan. I then ran CC Cleaner and cleaned my system using the built in function of MS Windows 7. I than re-ran the the PC Matic scan again it found registry errors I knew were not the as I had cleaned my registry with CC Cleaner. The scan is built to show you have problems so you by the program
Temporary records reading, free space verifying and modified driver examining these are just a few of the various essential areas of your computer that one must check on frequently. Other factors such as virus and spyware checking should be run more on a daily base.