Works good if you need it
I used this for awhile and found that it appeared to do exactly what it claimed to do. However, I found that my 2011 MBP with 16GB RAM with OSX 10.8 was hanging up periodically when iCleanMemory was running its automatic process. Since Ive dumped so much cash into this laptop, I never want to see the beach ball. Since removing the app, I have not had the issue.
Please note, same laptop with 8GB RAM and OSX 10.7 worked great. I am suspect that the OS has more to do with the issue than the RAM, but upgraded both together.
Niwrik about
iCleanMemory