Is there a need for this kind of applications?
Each user can find "heavy" applications for which will prevent a small cleaning RAM. Even work with the browser sometimes can take a decent amount of memory, not to mention those who work with video, 3D, image processing, work with vector graphics, and just playing games.

Why clear memory Mac?
Programs are unloaded from the memory only when needed, i.e. when it ends. This approach greatly speeds up the work, but only in cases where you have a lot of RAM (more than 4 GB). Otherwise, it can slow down the contrary. For such systems, and useful tools such as Memory Clean, which will clean the forced memory. In most cases, the utility work automatically, so you can install it and "forget." Clear Memory Mac will take place in the background without your intervention.

Note: Memory Clean works by clearing inactive memory Mac and is best used at the time, when you close the application that you do not plan to use again.
During the cleaning process, the old Mac computers may slow down until treatment is completed.

What's new in Version 6.0
Fully updated for OS X El Capitan. We've worked super hard to optimize our memory cleaning algorithm and Memory Clean now frees up 50% more memory than similar apps. Extreme Clean often frees up more than 100% compared to others!

OS - MacOSX 10.7 or Later