If its free then it would be very easy to download and use and if you don't like it then to uninstall it.
I could not find the free download site for this program. Can you post a link to it? Some of these programs will do a free scan but then ask you to buy the program to fix the problems.
I like and use CCleaner and Glary because they are so easy to use and totally free . I also use Superantispy and Malwarebytes for spyware and both are free.
You can check out Gizmos for the best in freeware.