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DU Cleaner

* Clean up junk to free up space, Keep your phone clean & fast! *

4.4

46 Votes

DU Cleaner gets rid of smartphone sluggishness by erasing useless files. Digital detritus is deleted, scrubbed from the system cache and other memory sensitive areas until phone performance is boosted. To achieve this function, the handy App intelligently scans precious resources, looks at background processes, and deletes file residue so that those resources are free to boost the operating system. Performance gains aren't the only feature here, though, for DU-Cleaner also frees valuable hard drive and SD card space, the diminishing memory areas that are needed for more photographs and more downloaded Apps.

Speed and space are the two features that determine a smartphone or tablet's capabilities. Happily, by taking care of the latter issue, the former problem is washed away. In other words, when DU Cleaner scrubs away leftover files and system junk, raw speed is a natural byproduct. A single screen tap is all it takes to trigger the memory-cleansing process, then all of that system garbage is ejected from the smartphone's cache. The DU Cleaner App uses a smart algorithm to nail down these digital memory hogs, the file remnants that are causing App hiccups and interface slowdown, but this super-small utility can manage this task easily, and all in under a minute.

In addition to a smart scan that boosts speed and reclaims memory, DU Cleaner also removes old APK packages. Finally, the one-touch App animates pleasingly, displays the amount of freed space after the scan, and generally acts as a system streamlining App, one that's incredibly easy to use.

Pros

  • Deletes file remnants and scrap APK packages
  • Boosts phone speed
  • Reclaims lost memory
  • Single tap usage
  • Lightweight App
  • Employs an animated layout

Cons

  • Annoying pop-up advertisements

Details optimized for better user experience.

Potentially dangerous permissions

  • ACCESS_FINE_LOCATION: Allows an app to access precise location. Alternatively, you might want ACCESS_COARSE_LOCATION.
  • CALL_PHONE: Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.
  • GET_ACCOUNTS: Allows access to the list of accounts in the Accounts Service.
  • PROCESS_OUTGOING_CALLS: 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.
  • READ_CALL_LOG: Allows an application to read the user's call log.
  • READ_CONTACTS: Allows an application to read the user's contacts data.
  • READ_EXTERNAL_STORAGE: Allows an application to read from external storage.
  • READ_PHONE_STATE: 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.
  • WRITE_CALL_LOG: Allows an application to write (but not read) the user's call log data.
  • WRITE_CONTACTS: Allows an application to write the user's contacts data.
  • WRITE_EXTERNAL_STORAGE: Allows an application to write to external storage.

Other permissions

  • ACCESS_NETWORK_STATE: Allows applications to access information about networks.
  • ACCESS_WIFI_STATE: Allows applications to access information about Wi-Fi networks.
  • BATTERY_STATS: Allows an application to collect battery statistics
  • BROADCAST_STICKY: Allows an application to broadcast sticky intents. These are broadcasts whose data is held by the system after being finished, so that clients can quickly retrieve that data without having to wait for the next broadcast.
  • CHANGE_CONFIGURATION: Allows an application to modify the current configuration, such as locale.
  • CHANGE_NETWORK_STATE: Allows applications to change network connectivity state.
  • CHANGE_WIFI_MULTICAST_STATE: Allows applications to enter Wi-Fi Multicast mode.
  • CHANGE_WIFI_STATE: Allows applications to change Wi-Fi connectivity state.
  • CLEAR_APP_CACHE: Allows an application to clear the caches of all installed applications on the device.
  • DELETE_CACHE_FILES: Allows an application to delete cache files.
  • GET_PACKAGE_SIZE: Allows an application to find out the space used by any package.
  • GET_TASKS: This constant was deprecated in API level 21. No longer enforced.
  • INSTALL_SHORTCUT: Allows an application to install a shortcut in Launcher.
  • INTERNET: Allows applications to open network sockets.
  • KILL_BACKGROUND_PROCESSES: Allows an application to call killBackgroundProcesses(String).
  • MODIFY_AUDIO_SETTINGS: Allows an application to modify global audio settings.
  • MOUNT_UNMOUNT_FILESYSTEMS: Allows mounting and unmounting file systems for removable storage.
  • READ_LOGS: Allows an application to read the low-level system log files.
  • READ_SYNC_SETTINGS: Allows applications to read the sync settings.
  • READ_SYNC_STATS: Allows applications to read the sync stats.
  • RECEIVE_BOOT_COMPLETED: Allows an application to receive the ACTION_BOOT_COMPLETED that is broadcast after the system finishes booting. If you don't request this permission, you will not receive the broadcast at that time. Though holding this permission does not have any security implications, it can have a negative impact on the user experience by increasing the amount of time it takes the system to start and allowing applications to have themselves running without the user being aware of them. As such, you must explicitly declare your use of this facility to make that visible to the user.
  • RESTART_PACKAGES: This constant was deprecated in API level 8. The restartPackage(String) API is no longer supported.
  • SYSTEM_ALERT_WINDOW: Allows an app to create windows using the type TYPE_SYSTEM_ALERT, shown on top of all other apps. Very few apps should use this permission; these windows are intended for system-level interaction with the user.
  • UNINSTALL_SHORTCUT: This permission is no longer supported.
  • VIBRATE: Allows access to the vibrator.
  • WAKE_LOCK: Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.
  • WRITE_APN_SETTINGS: Allows applications to write the apn settings.
  • WRITE_SETTINGS: Allows an application to read or write the system settings.
  • WRITE_SYNC_SETTINGS: Allows applications to write the sync settings.
  • android.permission.ACCESS_DOWNLOAD_MANAGER
  • android.permission.DOWNLOAD_WITHOUT_NOTIFICATION
  • android.permission.READ_SECURE_SETTINGS
  • com.android.launcher.permission.READ_SETTINGS
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