Clean Master (Speed Booster)

Clean Master (Speed Booster)


(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 Optimizer, Clean Master, Helps Clean Up Over 400 Million Phones!

When Do You Need Us?
CM is perfect for you if your phone has become laggy or runs out of battery easily, if it's stopped playing games smoothly, if it becomes too hot to hold, or if you want to free up some space to store more photos or songs.

What We Can Do For You
We make it easy to free up more storage from your phone and SD card, boost games and device memory, enhance speed & extend battery life, stop overheating and protect your device against malicious apps and vulnerabilities.

Highlights of Clean Master - Phone Booster & Antivirus

☆ Accurate: 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 for the seventh time! A professional quality antivirus service scans devices in just 8 seconds, 500% faster than other paid antivirus apps.

Features of Clean Master- Phone Booster & Antivirus

Cool off your device by finding and stopping the apps that are causing it to overheat and make your battery last longer!

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.

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.

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

Stay connected!

Join our community:

Requested permissions

Camera permission: This permission is used for Clean Master's flashlight feature, which uses the camera flash from the device's rear camera. Clean Master does not use the device's microphone at all - Android lists both camera and microphone permissions together, even if only one is used.

Help fight against deceptive ads

Cheetah Mobile (formerly KS Mobile) is committed to fighting against misleading downloads. You can find our full official policy on this matter here:

If you come across one of these ads, you can help us to take them down. Please visit the following URL and fill out the requested information - . The more detail you can give the better. Thanks for helping us improve the Android ecosystem!


Clean Master (Speed Booster) Videos

Recently changed in this version

1. Added support for creating CM accounts with Google accounts
2. Added background cleaning - no need to wait for cleaning to finish!
3. Optimized the interface of Download Manager
4. Optimized some details in Homescreen Show

1. Added Download Manager - an easy way to organize your downloaded and received files
2. Added Homescreen Showcase - share your wallpapers with other users
3. Added comment system to Antivirus and results page - communicate with other users

Lists with Clean Master (Speed Booster)

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.
  • - Mount and unmount file systems for removable storage.
  • - android.permission.READ_EXTERNAL_STORAGE
  • - Read the system log files. Usually used to collect crash and force close reports.
  • - 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.
  • -
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  • -
  • -
  • -
  • -
  • - com.cleanmaster.mguard.permission.C2D_MESSAGE
  • -

Displaying 3 of 0 - show all

  • Deleted
    Application deleted from the Android Market 2d ago.
  • 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.
  • Updated
    New version 4.1.0 released on 01/12/14.
  • Updated
    New version 4.0.1 released on 01/01/14.
  • Updated
    New version 4.0.1 released on 01/01/14.
  • Updated
    New version 4.0.0 released on 12/18/13.
  • Updated
    New version 4.0.0 released on 12/12/13.
  • Updated
    New version 3.8.6 released on 11/28/13.
  • Updated
    New version 3.8.3 released on 11/09/13.
  • Updated
    New version 3.8.3 released on 11/03/13.

Displaying 4 of 50 - show all

Add comment
Comments and ratings for Clean Master (Speed Booster)
  • (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 Amogh Arvind on 14/04/2015


  • (0)

    by Vasanth Kumar G N on 14/04/2015