Clean Master

Clean Master (Boost & AppLock) Varies with device

The best way to clean your Android device

Clean Master (Boost & AppLock) is an excellent solution to clean and maintain your Android, an app that's easy, effective, and free. View full description


  • Very effective
  • Several cleaning tools
  • Practical widgets
  • Clean and functional design


  • Some useful features are somewhat hidden


Clean Master (Boost & AppLock) is an excellent solution to clean and maintain your Android, an app that's easy, effective, and free.

Different types of cleaning

Clean Master offers different features to keep your device spotless:

Memory Boost: analyzes the apps that are running and lets you choose which ones to stop. This means you can free up RAM memory and speed up the performance of your device. In addition, it lets you create a widget to clean the device with just one tap.

Antivirus: analyzes the system for malware and vulnerabilities. The scanning is very fast and a final report shows the history of analysis. You'll also be able to access the Privacysub-menu, which lets you delete sensitive data such as browser history, call logs, SMS messages, and more.

App Manager: identifies the apps installed on your Android device and lets you remove those you're not using. It also includes a function to delete those temporary APK files that build up if you download outside Google Play.

Junk Files: Clean Master finds and removes temporary files, clears the system cache, and fixes basically whatever else is using up space on your device. The analysis also includes the identification of obsolete APKs and the Memory Boost described above.

Functional design

From the main screen, you can access a general overview of the status of the device and easily get access to the four main program areas: Junk Files, Memory Boost, Antivirus, and App Manager.

The Clean Master interface is easy to use and has a modern design.

Everyone should have it!

Clean Master is an indispensable app for your Android phone. Easy to use, practical and suitable for every type of user, it's ideal to ensure maximum efficiency of your device.


The latest version of Clean Master includes better optimizing speed when scanning and cleaning junk files, optimization of storage overview display and an optimizer that detects similar apps and removes them.

An all-in-one Android app for clearing cache, residual files, privacy data and uninstalling apps.

Simple, thorough, and safe, Clean Master is the world’s most downloaded Android optimization app designed to clean junk files, regain free storage, boost memory, enhance speed, and secure your device from malicious apps and vulnerabilities. Brought to you by Cheetah Mobile (formerly known as KS Mobile).

More than 200 million people worldwide use Clean Master to remove junk from their devices and to prevent malware infections. Clean Master improves performance by optimizing device memory, unclogging storage and offering security against viruses, trojans and malware. Developed by Cheetah Mobile, Clean Master is the world’s most reliable companion for Android devices!

Highlights of Clean Master - Optimization & Antivirus

Thorough: 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.

Fast & Intuitive: Simple to use, super-fast and smooth UI, plus cool transition effects

Ranked #1 by AV-TEST, providing professional security protection. Scanning takes only 8 seconds, 500% faster than other paid antivirus apps.

Features of Clean Master- Optimization & Antivirus


Delete cache and residual files to reclaim memory and improve performance on your device and SD card.


Boost all games and running apps, free up memory (RAM) and speed up your device. Our One-Tap Boost and Game Boost features make it easy to optimize directly from your home screen.


Scan the system, pre-installed and user-installed apps to keep your device safe from viruses, trojans, vulnerabilities, adware and spyware. Remove personal and sensitive information to protect your privacy.


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 App Picks lets you find useful apps that match your interests.

Clean Master


Clean Master (Boost & AppLock) Varies with device

User reviews about Clean Master

  • by Anonymous

    Shovelware by ASUS in Lollipop system upgrade.
    Cheetah Mobile convinced ASUS to put a stub to their app in the L...   More

  • by Anonymous

    Makes my Android overheat..
    Seems like my Android phone is overheating constantly since I started using Clean Ma...   More

  • by Anonymous

    Maleware collecting fotos collecting your private data like telephone number, your contacts, your IMEI...   More

  • by Anonymous

    I'm not into it.
    Task killer can't really end the progress. I don't like that.
    Cons: task killer.   More

  • by Anonymous

    DO not recommend this app..
    Clean Master will let out users' privacy. I do not recommend this app..   More