CCleaner vs Kerish Doctor

CCleaner for Windows
1

I've been using CCleaner for a few years in 'cheapskate mode', and have been pleased - despite losing cookies, logins, other stuff when I authorise 'GoForIt' without thinking hard enuff. Nonetheless, I have good feelings for Piriform and CCleaner.

I'm now running a new Dell 'pooter with Win10Home64, and populating it. Being a 'tightwad' I'm running a try-out copy of this 'Kerish Doctor', which is competing for my hard-earned moolah. And so is Piriform.... And so is Bitdefender....

So help me out here. How do the first two - CCleaner and Kerish - differ, and where do they overlap?

2

This is the official Piriform software forum. Asking for a comparison isn't going to happen against any competing products. With that being said I'll now close this topic.