I've only used it's privacy settings. So far so good. Each section has a Restore Defaults and Create a Restore Point option.
From it's website: Those of you who have upgraded to Windows 10, would definitely want to use it to judiciously tweak your Windows 10 and personalize your computing experience. With judicious tweaking, it can make your system faster, more stable, personal and more secure with just a few mouse clicks.
Hover over a tweak, and get the description at the bottom of the tweaker.