Only $0.49/month! Install ad-free dfndr security now and save 70%.

See what other users have to say about dfndr performance

I purchased the app to keep my phone cleaned of the junk, that everything leaves behind, i've tried many of these apps!! And THIS ONE ACTUALLY WORKS! IT'S easy to use it provide a symbol to silently alert you, when something needs cleaned, overheating, or apps draining your battery, it just keeps my devices running as new, it frees up internal storage that bogs down our devices. I have it on two phones, one which I loved but ran so slow it was worthless to use, bought a new phone and this app! I put this app on my old slow phone after running this app it cleaned out so much garbage it ran like NEW! If I'd only known of this app sooner, I would have saved a lot of money n hassles of a new phone, I have it on all my phone's & tablets.
Connie
Finally one so easy to use, and it works! ? it, thanx
Tina
Cleaner, cooler, booster, protector & organizer.....need I say more? Merry Christmas dfndr!
K S S
Omg awesome cooling ability works really well its like Christmas in your phone 10/10
Hindi
I love this app this is an upgrade to all the other apps that doesn't work that good this is the most awesome app ever it has everything
Manuel
I'm very impressed with your dfndr. It improves my phone in seconds and gives me more memory.
Sharon
Great way to get rid of unnecessary stuff on my phone.
Derron
The best cleaning app ever made!!!!!!!!!!!!!!!!!!!
Isidra
The best cleaning application that I have used on all my phones over the years.
Steven

what does the app do?

dfndr performance is an all-in-one phone memory booster app designed to maximize storage space, improve battery life, and increase speed by keeping the memory free of junk files.
4.6
4.6

What features does the app have?

Quick Cleaner
Delete junk files and clear cache with a single click.
Internet Accelerator
Improve slow internet connections by finding and closing apps that are competing for bandwidth.
Applock
Protect your phone with an extra layer of security using passwords and fingerprint scan technology.
Battery Saver
Extend your phone’s memory and battery life by automatically closing apps running in the background.
Free
Enjoy these great features at no cost!
  • Quick Cleaner
  • Speed Boost
  • Battery Saver
  • Applock
  • CPU Cooler
  • Notification Cleaner
  • Free up your memory
  • Performance Assistant
  • Deep Cleaner
  • Scheduled Cleaner
  • Advanced Cache Cleaner
  • Downloads Cleaner
  • Duplicate Photos Cleaner
  • Messenger Cleaner
  • Call Log Cleaner
  • Internet Accelerator
  • WhatsApp Cleaner
  • Lockscreen Charge Monitor
  • Ads-free
Ads-free version
  • Quick Cleaner
  • Speed Boost
  • Battery Saver
  • Applock
  • CPU Cooler
  • Notification Cleaner
  • Free up your memory
  • Performance Assistant
  • Deep Cleaner
  • Scheduled Cleaner
  • Advanced Cache Cleaner
  • Downloads Cleaner
  • Duplicate Photos Cleaner
  • Messenger Cleaner
  • Call Log Cleaner
  • Internet Accelerator
  • WhatsApp Cleaner
  • Lockscreen Charge Monitor
  • Ads-free

5 tips to make your phone faster

Keep your phone running like brand new by installing dfndr performance and using these simple tips.

 


LESS IS MORE

Let’s face it, we’re all guilty of loading our phones up with apps. But how many of those apps do you actually use? Too many apps can rob your phone of valuable storage space and slow down performance by draining memory. Help keep your phone fast with plenty of storage by regularly uninstalling apps that you no longer use.

 

 


THE POWER OF THE SD CARD

Free up space on your phone by moving unused apps to your SD card. On Android, go to “Settings”> “Apps”. Then, slide to the right and scroll to “SD card”. Select the apps that you want to move, followed by the “Move to SD card” option. The selected apps will now be stored on your phone’s SD card.

 

 


CLEAN YOUR CELL PHONE

Use an app that optimizes the performance of your phone to eliminate temporary data, which accumulates over time. This can also be done using dfndr performance.

 

 


MORE REGULAR BACKUPS

Avoid letting your data accumulate on your phone by doing regular monthly backups to a cloud server or copying important files to your computer. Not only will it free up valuable space on your device, but if it is ever lost or stolen you will have copies of your contacts, photos and important files.

 

 

Top-Rated Security

For Everyone

Achieved the highest score on AV-Test 20+ times

 

Our apps use artificial intelligence and machine learning technology to protect what matters to you most.
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223,809
cyberattacks detected by PSafe in the last 24h

Help me choose

Find the right app that fits your needs.
Antivirus
A complete solution for all of your phone’s security needs.
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Fake News Alerts
Detects and warns you of potentially fake news links before you click on them.
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Anti-theft
Recover your phone and secure its contents if it's lost or stolen.
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Scam Alerts
Detects and warns you of potentially malicious links and websites before you click on them.
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Private Photo Gallery
Avoid an “oops” moment and hide sensitive photos in a secure place.
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Junk Cleaner
Improve processor speed and functionality by removing junk files.
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Notifications Cleaner
Hide notifications from selected apps then review and clear them when you’re ready.
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Phone Booster
Improve your phone’s performance.
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Applock
Password-protect apps containing sensitive data.
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Call Blocker
Stop annoying robocalls with a single tap.
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Phone Assistant
Get daily alerts on how your phone is performing.
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Apps Cleaner
Create more room on your phone by deleting unused apps.
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Battery and storage saver
Save your battery, mobile data, and free up some storage space.
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Duplicate Photos Cleaner
Gain more storage by deleting redundant photos.
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Internet Booster
Speed up your connection by closing bandwidth draining apps.
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Secure Backup
Keep an encrypted copy of your vault in the cloud.
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Intruder Alert
Get a warning when someone tries to open your vault without your permission.
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Decoy Vault
Create a decoy vault with a fake pin to fool intruders.
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Camouflage
Change the dfndr vault icon to disguise the app.
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Hide notifications
Hide notifications from other apps so they won’t appear on your homescreen.
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VPN
Be invisible to hackers.
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Games Booster
Speed up your favorite games.
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Scheduled Cleanup
Setup automatic cleanings to remove junk files.
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WhatsApp Cleaner
Easily delete storage hogging files and conversations.
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Messenger Cleaner
Select the files you want to erase from your log.
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Cache Cleaner
Make your phone faster by removing old files.
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Wifi Check
Check the speed and security of your internet connection.
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CPU Cooler
Prevent your phone from overheating by closing background apps.
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