I have used so many antivirus and ram management apps but CM security is best. It very effectively cleans junk files and releases ram. I have cross checked and found that it really works. It is not like other ram cleaning apps which shows that ram is cleaned but actually nothing happens. It scans my phone and detects for any virus or harmful file and removes it. It also provides app lock feature which is very useful to keep privacy of apps strong. I can only open the app after drawing the security pattern. It provides one touch ram booster, one touch scanning. Its just great