I just installed it and it found just 133MB of junk to clean. So much for cleaning gigabytes. But, to be fair, I regularly clean junk with Wise Disk Cleaner and Clean Master for PC. Just yesterday, Clean Master deleted around 900MB of junk. I just ran scans with Clean Master, Wise Disk Cleaner and Kerish Doctor, and these were the results.
Wise Disk Cleaner 136MB
Kerish Doctor 138MB
Clean Master for PC 253MB
As you can see, it did just as well as Wise and Kerish.
View attachment 187411
The amount of junk found, is shown in bytes, rather than megabytes, which makes it seem like it is more than it really is.
I would be interested to run this on a computer with a lot of junk, on which no other disk cleaner has been run first, to see how it compares to others in that situation.