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Clean Master Phone Boost

FREE Low Maturity android
Cheetah Mobile
Overall Satisfaction click me 94
Best Cleaning App for phones that are not rooted.
The perfect cache cleaner and task killer with autometic killer.
Even if u clean apps ruuning or cache clean.
Very very useful app highly recommended :.
Best app thanks devs.
many Thanks to developers for making it free.
The best optimizer available on play store.
Fun & Engaging click me 96
Its the awesome cleaner I recommend all to use it.
Awesome thanks for the application.
Usefulness click me 96
This app cleans everything unneeded off my phone.
nice and excellent and very usefull apps.
Very helpful application especially when my fone hang.
Great app very useful.
It keeps everything running at top speed.
Ease of Use click me 97
Easy and effective cleaning app for caches and history.
Fast effective and easy to use.
Fast simple optimises helps the phone actually like a Dr.
Awesome easy to use and very fast.
Easy and smart.
Super easy and efficient.
Easy to remove all cache files.
Reliability click me 48
I did a factory reset.
I've never had issues with my phone until that day.
Security & Privacy click me 60
I use this in conjunction with their CM Security app.
Terrific 1st security app for new device user.
Also it makes all my devices safe and secure.
Its safe and secure.
Battery click me 85
Downloaded this in conjunction with this company's other app - Battery Doctor.
Works perfectly fine I love cheetah mobile apps like battery saver.
very poor battery saver.
Click blue bar for explanation of rating.
Simple, fast and accurate, Clean Master is the world’s most downloaded Android cleaner, speed boost and antivirus app, designed to help you reclaim storage, boost memory, enhance speed, and secure your device against malicious apps and vulnerabilities. Developed by Cheetah Mobile (formerly KS Mobile), Clean Master is the world’s most reliable companion for Android devices used by over 200 million people worldwide!

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 fifth 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) and speed up your device. 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, Hindi, Malay

Want to help in our localization efforts? Apply to join our translation community:


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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!

Best Cleaning App for phones that are not rooted. found in 282 reviews
I luv this app it speeds up my phone with one touch. found in 14 reviews
The best optimizer available on play store. found in 7 reviews
Smoothest and most efficient cleanup app ever. found in 8 reviews
I got rid of SO many games with a push of a button. found in 6 reviews
This is the best tool for optimizing phone memory and overall. found in 6 reviews
Very helpful application especially when my fone hang. found in 7 reviews
Several devices later and this is the best cleaner app on the market. found in 5 reviews
Very good aplication and it does good things. found in 20 reviews
nice and excellent and very usefull apps. found in 11 reviews
perfect for speeding your device up and freeing some space. found in 7 reviews
Awesome app ever seen before I use. found in 4 reviews
Nice app for managing phone like managing memory rem. found in 4 reviews
Get your device running smooth as silk with this app. found in 4 reviews
The moust helpfull app I have ever downloaded :. found in 7 reviews
I've been using this app for about a month now and I must say. found in 2 reviews
A really space saver for my phone. found in 6 reviews
This is a great utility. found in 10 reviews
The best in the world I seen. found in 7 reviews
makes a difference thank you. found in 6 reviews
A good app to clean junk files and clear ram. found in 487 reviews
It doesn't clean my browser history on my lg optimus f5. found in 8 reviews
it doesnt clean properly and big disapontament is. found in 8 reviews
This app is helpful to clean junk data. found in 9 reviews
It Deleted my game data. found in 6 reviews
keep asking me for a root permission. found in 5 reviews
New permissions allow camera to take photos without you knowing it. found in 5 reviews
Can't create shortcut for 1 tap boost when using Apex Launcher. found in 3 reviews
You can't clear the browser history like other apps allow. found in 5 reviews
It deletes my all audio files. found in 2 reviews
Why does a cleaning app need camera permission. found in 4 reviews
Don't even need anti virus if u have this app. found in 52 reviews
Delete junk data within a second. found in 12 reviews
Unable to move application data to external SD card. found in 7 reviews
It's best app for removing junk from Mobile. found in 5 reviews
After several other apk files mysteriously vanished. found in 10 reviews
Deleted my songs without notifying me. found in 2 reviews
Pictures and videos are not junk :/. found in 7 reviews
But now it makes my phone lag terribly. found in 5 reviews
App wipe the music files as junk files. found in 4 reviews
It's annoying that it keep deleting my apk file. found in 10 reviews
It deletes many important files unknowingly. found in 10 reviews
Cannot kill task and running applications. found in 9 reviews
It sucks it doesn't clean my phone like the old version. found in 8 reviews
Doesnt clean my internet history. found in 8 reviews
My external sd card is not working abd picture deleted. found in 7 reviews
This app wiped my SD card and pictures and videos. found in 7 reviews
Clear search history is not working. found in 7 reviews
Need an update or will un install it for sure. found in 6 reviews
Causes phone to freeze up. found in 5 reviews
Its even worse than history eraser. found in 5 reviews
Why need all those new permissions. found in 5 reviews
Too many permissions. found in 5 reviews
I would give five stars but ignore list is not working. found in 5 reviews
Uninstalled it and my phone battery is back to normal. found in 5 reviews
rated better for game data.   rated better for task manager.  
"Advanced Task Killer does what it is supposed to do."
"Every phone I've owned ADVANCED TASK KILLER has been my go to."
"easy task killer and easy battery saver are my life savers."
"Saves battery more efficiantly then advanced task killer."
"switched from " advanced task killer " I like this much better."
"This combined with easy task killer makes my phone last for days."
"Best antivirus app that work well in my android phone."
"Just the best antivirus app for my & your smartphone :D."
"One of the best antivirus app which has everything."
"This is the Best Antivirus App for Free on Google Play."
"Best antivirus app out there & worth every dollar spent."
"Dr web Best antivirus protection in your phone."
"When I try 2x battery saver it made my battery last 1."
"Simply the best battery saver SAMSUNG Galaxy Note II."
"Fine Combine with Easy Battery Saver and gain advanced battery control."
"Good battery saver as compared to other battery saver."
"Best battery saver I use 3 without charge."
15,638,311 total

This app is popular with:
  • Free up memory quickly on both Note phone and Tab Pro.
  • Great way of saving space on my device.
  • The perfect cache cleaner and task killer with autometic killer.
  • Very useful to kerp phone clean an always extra space.
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