iCleanMemory

Purchased this for .99 via the App Store and PayPal. Apple charged me eight (8) times for the same purchase, but calling PayPal I was quickly able to get the proper credits. (A week later Apple acknowledged the error was theirs by email). I was excited by the then glowing reviews for this app, but after a few days use I found its use was making my Mac very unstable and have since stopped using it. There is no such thing as a free lunch (or even a .99 one) so my advice is caveat emptor.

This app is completely unnecessary. Mac OS X does a great job at automatically freeing memory when you need it. If you really think it makes a difference manually freeing some memory, you do NOT need to buy a program like iCleanMemory. Just install the developer tools and type "purge" in the Terminal application. Save you money. This app is unnecessary.

This is one of those neat little "does one thing and does it well" type of utilities. Sure, you could use the "purge" command in Terminal as suggested below but I like the convenience of having the utility in my Menu Bar so I can quickly check the amount of used/free memory and purge it if needed. I don't want to think about opening Terminal and typing in the command. I also like to support indie developers who come up with nice solutions as this. I give this 5 stars.