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Clean Master - Free Optimizer

FREE Low Maturity android
Cheetah Mobile
Overall Satisfaction click me 93
It is usefull app for android mobiles and tablets.
The perfect cache cleaner and task killer with autometic killer.
Even if u clean apps ruuning or cache clean.
Great cleaning tool for phone and tablet simply awesome.
Good over other anti virus app.
many Thanks to developers for making it free.
Best app thanks devs.
Best performance boosting.
Fun & Engaging click me 95
Exellent just awesome clean your device with clean master.
Awesome thanks.
Usefulness click me 95
This app cleans everything unneeded off my phone.
nice and excellent and very usefull apps.
Very helpful application especially when my fone hang.
The moust helpfull app I have ever downloaded :.
It keeps everything running at top speed.
Its very useful software for mobile.
Ease of Use click me 97
Easy way to clean cache and memory in your phone.
Easy to use and very good at doing is job without much fuss.
Fast simple optimises helps the phone actually like a Dr.
Easy and smart.
Awesome easy to use and very fast.
Simple and sweet.
Super easy and efficient.
Reliability click me 80
I did a factory reset.
Security & Privacy click me 43
Terrific 1st security app for new device user.
Also it makes all my devices safe and secure.
Battery click me 66
Works perfectly fine I love cheetah mobile apps like battery saver.
very poor battery saver.
Recommend that people who get this also get battery doctor.
Click blue bar for explanation of rating.
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 for the fifth time! , 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 homescreen.


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.

Stay connected!

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Other apps from us on the Play Store

CM Security:

Battery Doctor (Battery Saver):

CM Browser:

CM Backup:


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


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.

► For more permissions and usage, please refers to :


Help fight against deceptive ads

Cheetah Mobile (formerly known as 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!

Smoothest and most efficient cleanup app ever. found in 7 reviews
It's very nice cleaner and working also very cleanly. found in 15 reviews
Very helpful application especially when my fone hang. found in 7 reviews
I enjoyat push of a button an cleaned up. found in 5 reviews
Very good aplication and it does good things. found in 18 reviews
nice and excellent and very usefull apps. found in 8 reviews
The moust helpfull app I have ever downloaded :. found in 6 reviews
This is the best cleaner app on the market. found in 4 reviews
I've been using this app for about a month now and I must say. found in 2 reviews
you guys should make this app the app of the year 2014-2015. found in 3 reviews
makes a difference thank you. found in 5 reviews
The best optimizer available on play store. found in 4 reviews
Works great cleans your phone and gives you more space back. found in 3 reviews
Its a very good App that keeps yo phone in check. found in 3 reviews
Great time & space saver. found in 4 reviews
Thanks for sharing your own home and office. found in 3 reviews
Good app very useful. found in 4 reviews
Helps me clean up junk files that I don't need. found in 310 reviews
Doesn't clean as much as u like it thought it would. found in 7 reviews
it doesnt clean properly and big disapontament is. found in 7 reviews
The tap boost shortcut doesn't appears in the home screen. found in 2 reviews
I don't trust this app but let me keep testing. found in 2 reviews
Simply clears up unwanted junk that is mostly unseen & unused anyway. found in 11 reviews
This app is helpful to clean junk data. found in 8 reviews
Seems like maybe a good app but still questionable to me. found in 3 reviews
New permissions allow camera to take photos without you knowing it. found in 5 reviews
keep asking me for a root permission. found in 4 reviews
Can't create shortcut for 1 tap boost when using Apex Launcher. found in 2 reviews
My phone still sucks though. found in 3 reviews
Privacy cleaner doesn't complete its scan Apart from that: Would totally. found in 2 reviews
i tend to install then uninstall apps. found in 10 reviews
Unable to move application data to external SD card. found in 6 reviews
Deleted my songs without notifying me. found in 2 reviews
It Deleted my game data. found in 5 reviews
Please let us decide if want root access in settings. found in 6 reviews
Needs to many permissions and is bit intrusive. found in 5 reviews
Does Not Clean Clipboard. found in 2 reviews
Cannot kill task and running applications. found in 9 reviews
It deletes many important files unknowingly. found in 8 reviews
It sucks it doesn't clean my phone like the old version. found in 7 reviews
Doesnt clean my internet history. found in 7 reviews
Clear search history is not working. found in 7 reviews
My external sd card is not working abd picture deleted. found in 6 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
This app sucks whenever i off notification toggle. found in 5 reviews
You can't clear the browser history like other apps allow. found in 4 reviews
Will delete all your audio files without warning. found in 4 reviews
So be careful and don't clean what it tells you too. found in 4 reviews
Great if you want to remove garbage from sd card. found in 4 reviews
Causes phone to freeze up. found in 3 reviews
rated better for battery saver.   rated better for task killer.  
rated better for task manager.   rated better for auto kill.  
"Every phone I've owned ADVANCED TASK KILLER has been my go to."
"Significant increase in battery life after using this advanced task killer app."
"easy task killer and easy battery saver are my life savers."
"switched from " advanced task killer " I like this much better."
"Saves battery more efficiantly then advanced task killer."
"over 5 000 000 users have already enjoyed super task killer free."
"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."
"Best battery saver I use 3 without charge."
"This is by far the best battery saver app ive installed."
"It is the best battery saver on googleplay store."
10,659,597 total
  • Free up memory quickly on both Note phone and Tab Pro.
  • Good one helps in assisting device memory usage and c leaning.
  • Super service and mind blowing app.
  • Live how easy it makes saving space.
  • The perfect cache cleaner and task killer with autometic killer.
  • "I don't understand why you need to take pictures."
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