Have you ever found that your device has become laggy and freezes all the time? Or you don't have enough space to take more pictures or install apps? With the world's most trusted Android optimizer, speed booster and free anti-virus app, Clean Master helps you solve all these kinds of problems!
AppLock can lock Facebook, SMS, Contacts, Gallery, or any other apps you choose. With AppLock, only you can see the photos you protect. Guarding your privacy is easier than ever!
► Duplicate Photo Remover
Clean Master can identify similar photos & blurry photos automatically, giving you the choice to keep or delete them. It's just like a gallery doctor for your device.
► JUNK FILE CLEANING
The junk-creating behavior of millions of apps has been analyzed so that Clean Master can efficiently hone in on its targets (cache and residual files) with perfect accuracy. Delete cache and residual files to reclaim storage, boost speed and improve the performance of your device and SD card.
► MEMORY BOOST
Boost your games and apps, free up memory (RAM), speed up your device and save more battery. Our 1 Tap Boost and Game Boost features make it easy to optimize directly from your homescreen.
► CPU COOLER
Cool off your device by finding and stopping the apps that are causing it to overheat and make your battery last longer!
Ranked #1 by AV-TEST for the seventh time! A professional quality antivirus service scans devices in just 8 seconds, 500% faster than other paid antivirus apps. Scan the system, pre-installed and user-installed apps to keep your device safe from viruses, trojans, vulnerabilities, adware and spyware. Keep your privacy safe by scrubbing personal info from your device.
► Game Booster
Automatically improve your game speeds by 30%+ when launching games.
► Autostart Manager
Prevent apps from autostarting to speed up your device. (Root needed for this feature)
► APP MANAGER
Uninstall unwanted apps or bloatware and back up important ones. Some rooted devices will be able to move apps to the SD card as well as uninstall pre-installed and system apps. Our own Picks section lets you find useful apps that match your interests.
According to the principle of Memory Management of Linux, "Free Memory Is A Waste Of Memory." And as you all know, Android is based on Linux OS. So Memory is never free in Android. Memory that is not being used currently by the OS is not empty. It is filled with Cached Processes. That's the reason you will find Show Cached Processes in Apps section.
Getting back to the original question, are these Apps are worthy ? Absolutely not. When you clear memory using from these Apps, these apps Forcefully Stops your running processes against the rules of OS. For a few seconds you will feel that your phone is running smoothly, lag free. But after few seconds, Android OS again fills the free memory with Cached Processes. Thus this results in extra work load of your CPU and thus drains your battery.
As for Clean Master, I actually have it myself. But the only feature I use is cleaning junk files. However, do you really care about those few hundred megabytes of storage space? I know I don't really have to because my phone is always half empty (pun intended).