This software is a very good cleaning application. It has no hidden 3rd Party Adware policy which is obviously a great thing while opting for a free software. The software consumes very less RAM. According to what we tested, it consumed a maximum of 40 MB of RAM and a minimum of 23 MB of RAM in running and idle conditions respectively.I find many cleaning and tuning apps, but this app can’t be categorized to the tune up software’s for computers. As its name suggests “Clean Master”, it is a useful software tool for cleaning up space or junk files. Before I start discussing more about it let me tell you that, even if your Internet usage data left is just below 10 MB you can start downloading after reading the complete review. Yes! It’s just 5.5 MB sized software.Now when we talk about cleaning junk files, you may think that you can do it by the%temp%, prefetch and other actions similar to it which is available under the properties of a Hard Disk. You must be knowing about these things if you really took time to optimize your PC from a slower speed to a faster speed.But as we observed the efficiency, the Clean Master really stood out of the box in the Junk Cleaning categories of software’s. Every time we logged in to the computer and used numerous applications, it cleaned up all the junk files / temporary files belonging to those application software’s.In the built-in junk cleaning tool that comes with the hard drive properties in Windows uses different algorithm, but the Clean Master uses a more efficient algorithm to prove it’s worth being a free software.While we cleaned the PC using the in-built tools we found that it works efficiently when we had not cleaned our PCs for an interval of time. But Clean Master detects Junks even after using the PC for some minutes. Let it be of size less than 10MB, but it cleans it up.