About this app

Free—clean up system trash files (caches), extend SD card storage, and solve your lack of disk space. Plus free Speed Booster for Android Phones.

Have you ever encountered the following problems?
1. System garbage causes the phone to run slowly and app garbage eats up your internal storage.
2. No more space is available for new photos or apps.
3. Your phone is running crazily slow.
All these situations need a clean-up tool, such as a phone booster, junk remover, etc.

Highlights of DU Cleaner (Boost & Clear Cache):
► Ultra-small size
Making it much smaller than similar apps on Google Play.
► Extremely focused
Performs the most comprehensive trash-cleaning to save you more phone space;
► Intelligent analysis
Using our new intelligent analysis engine, DU Cleaner (Boost & Clear Cache) deletes what you want to remove, leaves what you think is useful, and never loses your good memories.

Features of DU Cleaner (Boost & Clear Cache):
► Clean Up & Junk File Cleaning
The junk-creating behavior of millions of apps has been analyzed so that DU Cleaner (Boost & Clear Cache) can efficiently hone in on its targets (cache and residual files) with perfect accuracy. Delete cache and residual files to reclaim storage, boost speed, and improve the performance of your device and SD card.
► Memory Boost
Boost your games and apps, free up memory (RAM), speed up your device, and save more battery. Our 1-Tap Boost features make it easy to optimize directly from your homescreen.
► Useless APKs
Find and delete useless APKs on your phone to free up more storage space.
► Residual Files
Clear up residual data from previously uninstalled applications.

The World's Most Trusted Android Optimizer, Speed Booster, and trash-cleaning app; DU Cleaner & Speed Booster is a FREE app that can help clean redundant apps and files, free up storage space, clean up your RAM, and speed up your Android device.

Help fight against deceptive ads
DU Group is dedicated to providing a safer mobile experience for our global users, so we’re committed to fighting against misleading downloads. We’ve found that some ads might be malicious promotions from unknown channels. If you come across one of these ads, you can help us take them down. Please send the link and screenshots of the ad to spam_report@duapps.com. We appreciate your kind help.

App Permissions

Allows an application to collect battery statistics
Allows an application to find out the space used by any package.
This constant was deprecated in API level 21. No longer enforced.
This constant was deprecated in API level 8. The restartPackage(String] API is no longer supported.
Allows read only access to phone state, including the phone number of the device, current cellular network information, the status of any ongoing calls, and a list of any PhoneAccounts registered on the device.
Allows applications to open network sockets.
Allows applications to access information about networks.
Allows an application to write to external storage.
Allows an application to read the low-level system log files.
Allows applications to enter Wi-Fi Multicast mode.
Allows applications to access information about Wi-Fi networks.
Allows an application to call killBackgroundProcesses(String].
Allows an application to modify global audio settings.
Allows an application to modify the current configuration, such as locale.
Allows applications to change Wi-Fi connectivity state.
Allows applications to change network connectivity state.
Allows an application to delete cache files.
Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
Allows an application to read or write the system settings.
Allows applications to write the apn settings.
Allows applications to read the sync stats.
Allows applications to read the sync settings.
Allows applications to write the sync settings.
Allows access to the list of accounts in the Accounts Service.
Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting.
Allows an app to access precise location.
Allows mounting and unmounting file systems for removable storage.
Allows an application to clear the caches of all installed applications on the device.
Allows access to the vibrator.
Allows an application to broadcast sticky intents.
Allows an app to create windows using the type TYPE_APPLICATION_OVERLAY, shown on top of all other apps.
Allows an application to read from external storage.
Allows an application to see the number being dialed during an outgoing call with the option to redirect the call to a different number or abort the call altogether.
Allows an application to read the user's contacts data.
Allows an application to write the user's contacts data.
Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.
Allows an application to write (but not read] the user's call log data.
Allows an application to read the user's call log.