Clean Master (Boost & AppLock)

Clean Master (Boost & AppLock)


(5 stars)



100,000,000 - 500,000,000 downloads

  • Clear residual files and unused APKs
  • Task-killer and cache-cleaner
  • Friendly UI
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Expert's Review

"Untainted droids"

Reviewed by / Jan 19, 2015

Clean Master is a comprehensive cleaner app for Android

"Comprehensive" since it's an all-in-one cleaning app: it allows to clear cache, unused files, app packages and history. Thus, Clean Master is way more than a simple task killer. It's KSMobile solution to keep your device at its highest performance.

There are fan and critics of task killers. However, most of the people would make use of an app for clearing cache and for detecting/deleting unused .apk located or residual files located on their devices. That's precisely what Cleaner Master allows users to do. In this regard, it's useful for everyone with device optimization concerns.

The importance of clearing cache. For example, when you're using browser, it saves the images as cache files. It's the same for other application and other processes. Clearing cache with powerful tools like Clean Master helps to speed up your device performance.

Likewise, Clean Master helps you to keep your phone protect against nosy people. Make use of "history eraser" to avoid other check out your Gmail, browser or Google Play history. There's no track after Clean Master.

However, there are two features that can be considered the strongest point of this app. First off, "Clean unused/residual files". When uninstalling, for example, big size games, extra data download remains on your device. Clean Master detects it and help you end up with free space gradual loss that happens to all Android devices.

Second feature that makes the difference is Clean Master's tool for deleting unused .apk. It uses to happen: you download the installation package of an app and then you keep it in your SDcard for months. Clean Master makes a list of .apk located on your device and allows you to delete them easily.

In addition, Clean Master is set in a user-friendly interface. A dashboard with four sections: "History", for clearing cache and privacy records, "Residual files", for deleting extra data downloaded (ends with the gradual loss of free space); "Tasks", its task-killer and, finally, "Temp APKs", that detects and allows you to clear unused APKs located in your device. What's more, if your device is rooted you will be able to enjoy an only-root feature: 1Tap Booster shortcut for a faster cleaning.

In brief, Clean Master is one of the most useful cleaning app due to its value added features, beyond task-killing. Highly recommendable.

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Developer's original description available here
The World's Most Trusted Android Optimizer, Speed Booster and Free Anti-Virus app, Clean Master Helps Accelerate and Clean Up Over 400 Million Phones! It Also Provides Real-time Protection With the #1 Antivirus Engine, and Secures Your Private Data With the AppLock Function.

Have you ever encounter the following problems?
Your device has become laggy and freezes all the time
You don't have enough space to take more pictures or install apps
Your battery has started draining quicker than ever
Your device overheats and needs to cool down
You want to lock your photos, gallery and messages from prying eyes and nosy friends

► AppLock
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.

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.

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.

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)

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.

Supported languages

Arabic, Bulgarian, Chinese, Croatian, Czech, Dutch, English, French, German, Greek, Hebrew, Hungarian, Indonesian, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Serbian, Slovak, Spanish, Thai, Turkish, Ukrainian, Vietnamese, Malay

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Clean Master (Boost & AppLock) Videos

Recently changed in this version

1. Optimized Photo Manager - Easier than ever to manage photos and save space
2. Added anti-intruder feature in AppLock to protect your privacy - Someone who tries to break into your phone will have their picture snapped
3. Various other  improvements

1. Improved the main page design
2. Various other improvements

Lists with Clean Master (Boost & AppLock)

Changelog and permissions

PermissionsChangelogPackage com.cleanmaster.mguard
  • - Know what access (wifi, 3G…) you have at every moment.
  • - Access information about Wi-Fi networks.
  • - Know how much battery is left and how it has been spent.
  • - Broadcast sticky intents, thus allowing quick data retrieval held by the system.
  • - Be able to access the camera device.
  • - Change network connectivity state.
  • - Change Wi-Fi connectivity state.
  • - Clear the caches of all installed apps.
  • - Enlarge or shrink the status bar.
  • - Have access to the list of accounts linked to your device.
  • - Find out how much space is used by any package.
  • - Get info about the currently running tasks.
  • - Send and receive internet info.
  • - Modify audio settings.
  • - Mount and unmount file systems for removable storage.
  • - android.permission.PACKAGE_USAGE_STATS
  • - android.permission.READ_EXTERNAL_STORAGE
  • - Read phone state. Used to know whether you're in a call or not.
  • - Use a deprecated permission that no app should ask for.
  • - Open windows on top of all other applications.
  • - Use the vibrator.
  • - Prevent your device from sleeping or screen from dimming (turn brightness down).
  • - Write whatever to your SD card.
  • - Read or write the system settings.
  • - Broadcast when an alarm condition is set.
  • - Read, but not write, the user's browsing history and bookmarks.
  • - Write, but not read, the user's browsing history and bookmarks.
  • -
  • -
  • -
  • -
  • -
  • -
  • - com.cleanmaster.mguard.permission.C2D_MESSAGE
  • -

Displaying 3 of 0 - show all

  • Updated
    New version 5.9.8 released 10h ago.
  • Changes
    Name changed from Clean Master (Speed Booster) to Clean Master (Boost & AppLock) 10h ago.
  • Updated
    New version 5.9.8 released 2d ago.
  • Updated
    New version 5.9.8 released 2d ago.
  • Updated
    New version 5.9.7 released on 05/14/15.
  • Updated
    New version 5.9.7 released on 05/12/15.
  • New
    Application reactivated on 04/29/15.
  • Updated
    New version 5.9.6 released on 04/29/15.
  • Deleted
    Application deleted from the Android Market on 04/26/15.
  • Updated
    New version 5.9.5 released on 04/14/15.
  • Updated
    New version 5.9.5 released on 03/25/15.
  • Updated
    New version 5.9.4 released on 02/24/15.
  • Updated
    New version 5.9.3 released on 02/11/15.
  • Updated
    New version 5.9.3 released on 01/29/15.
  • Updated
    New version 5.9.1 released on 01/09/15.
  • Updated
    New version 5.9.0 released on 12/21/14.
  • Updated
    New version 5.8.8 released on 11/27/14.
  • Updated
    New version 5.8.7 released on 11/05/14.
  • Changes
    Name changed from Clean Master Phone Boost to Clean Master (Speed Booster) on 11/05/14.
  • Updated
    New version 5.8.4 released on 09/26/14.
  • Updated
    New version 5.8.4 released on 09/15/14.
  • Updated
    New version 5.8.1 released on 08/26/14.
  • Changes
    Name changed from Clean Master - Phone Booster to Clean Master Phone Boost on 08/17/14.
  • Updated
    New version 5.8.0 released on 08/09/14.
  • Updated
    New version 5.8.0 released on 08/06/14.
  • Changes
    Name changed from Clean Master - Free Optimizer to Clean Master - Phone Booster on 08/01/14.
  • Updated
    New version 5.7.0 released on 07/14/14.
  • Updated
    New version 5.6.0 released on 07/01/14.
  • Updated
    New version 5.5.1 released on 06/14/14.
  • Updated
    New version 5.5.1 released on 06/11/14.
  • Updated
    New version 5.5.0 released on 06/05/14.
  • Updated
    New version 5.5.0 released on 06/04/14.
  • Updated
    New version 5.5.0 released on 06/02/14.
  • Updated
    New version 5.4.1 released on 05/20/14.
  • Updated
    New version 5.4.0 released on 05/11/14.
  • Updated
    New version 5.4.0 released on 05/10/14.
  • Updated
    New version 5.3.1 released on 04/28/14.
  • Updated
    New version 5.3.0 released on 04/20/14.
  • Updated
    New version 5.2.1 released on 04/15/14.
  • Updated
    New version 5.2.1 released on 04/12/14.
  • Updated
    New version 5.2.0 released on 04/06/14.
  • Updated
    New version 5.1.0 released on 03/24/14.
  • Updated
    New version 5.1.0 released on 03/20/14.
  • Changes
    Name changed from Clean Master (Cleaner) - FREE to Clean Master - Free Optimizer on 03/19/14.
  • Updated
    New version 5.0.1 released on 03/09/14.
  • Updated
    New version 5.0.0 released on 02/25/14.
  • Updated
    New version 4.2.0 released on 02/08/14.
  • Updated
    New version 4.2.0 released on 02/08/14.
  • Updated
    New version 4.2.0 released on 02/03/14.
  • + downloads
    Becomes more popular. 100000000 downloads level reached on 02/03/14.

Displaying 4 of 50 - show all

Add comment
Comments and ratings for Clean Master (Boost & AppLock)
  • (0)

    by techlaterofficial on 10/08/2014

    Why would anyone download this... I bet all the positive comments are all fake reviews... Not only does it waste my battery life, but it also deletes my important save files from games!! So tired of this app.

  • (0)

    by toolwiz2013 on 04/12/2013

    junk app!!!!!!

  • (0)

    by AndroPark on 15/05/2013

    nice app I am using this app, really loving it,
    I want to make an app for my website <a href=''>Andro-Park</a>
    Is there any way to make it?

  • (0)

    by jacky8157 on 13/04/2013

    Used it for several times, just known it was DEVed by KS Mobile

  • (0)

    by nelissalopez on 17/03/2013


  • (0)

    by Muralidharan Krishnan on 22/05/2015

    Super app for android phones.The recent update have news items coming on phone lock. That's a bit annoying.

  • (0)

    by sanjay singh on 22/05/2015