4/5

It is good, does what it says, a little expensive for what it is, but cleans off about 600mb every six months if I forget to do the clean up myself. Great for peace of mind, and can see this app as a valuable asset for older mac units. The out of date software check is not that great mind you, firefox was uptodate but this program insisted it was not. A hard drive manual defrag option would be nice in the next update.

Warren12345 about iBoostUp, v3.81