Clean Master (Speed Booster) v5.9.6 build 50961924

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Clean Master (Speed Booster) v5.9.6 build 50961924

Requirements: 2.3+

Overview: 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.


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.


Calculate how much CPU is being used by apps on your device. Stop apps from wasting battery, slowing down your device and overheating.


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

Want to join our volunteer team? Apply to get started:

Stay connected!

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:…ion-policy.html
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 – http://feedback.ksmo…/index?app_id=7 . The more detail you can give the better. Thanks for helping us improve the Android ecosystem!



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

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