On first glance, their download page makes it looks like you have to pay for CCleaner if you want it to actually do something.
Na ilele anya mbụ, akwụkwọ nbudata ha na-eme ka ọ dị ka ị ga-akwụ ụgwọ maka onye nchịkọta ma ọ bụrụ na ịchọrọ ka ọ mee ihe n'ezie.