It works, not sure most folks need it...

The product is effective and safe at releasing memory that is otherwise listed as unavailable to the OS, but the technical details of how Apple’s core memory management works strongly suggests that this does not improve performance in most situations. As long as you understand that and don’t get entranced by some “numbers game” this is good free utility.

Angry Elf123 about Memory Clean - Monitor and Free Up Memory, v6.2