First, I was very impressed that it actually does fix some stuff with the free trial version. I didn't expect that. I figured you'd have to buy it to get anything, but it does fix some file associations and even does the internet optimization, all for free.
I love it! My computer is noticeably faster now, and the cute cat is amazing! I'm thinking about getting their other software too.
I thought this was pretty good actually. My computer is running a little faster, not much. But it definitely starts up faster. Not sure about the "internet speed" thing, but it made a difference on botting up and restarting so I think it was definitely worth it.