If you own a android smartphone or tablet you should install this android application. Clean Master is the world's most downloaded FREE cache cleaner, RAM booster, and antivirus & security suite - Clean Master gives you full control over your phone to maximize performance and keep it clear of junk files.
Clean Master is a Free, top-rated all-in-one cleaner app for Android™ devices. Simple, Thorough and Safe, Clean Master is the world’s most downloaded Android optimizer, memory & speed booster, and security/antivirus suite.