Full user review
"Very thorough, but what it all means is another story."
Infinitely more informative than say MS Task Manager.
It's free, personally I would not pay for it anyway.
IMHO far too complex, I just look at the reports & wonder what it all means, & what should I do about it.
It has yet to help me solve any PC problem.
Probably helpful in the hands of experts but almost useless for the majority.