LOCX: App Lock and Photo Vault

Allows you to lock individual apps and hide files


82 Votes

  • Category Security/Performance
  • Program license Free
  • Version
  • Size 4 MB
  • Works under: Android
  • Program available in English
  • Content rating Everyone
  • Package name com.cyou.privacysecurity
  • Program by C Launcher Team - Fast Smart Launch
    Building A, Wanda Plaza, No.18 Shijingshan Road, Shijingshan District, Beijing 100043, P.R. China

LOCX: App Lock and Photo Vault can protect practically any app or photo on your Android device.

If you ever leave your phone or tablet unattended by accident or because you don’t have a choice, then you’re susceptible to an invasion of privacy. LOCX is an app that overcomes this problem by protecting your sensitive files as well as apps that can access sensitive information. This app even protects itself so that an invading user can’t just uninstall it to circumvent the protection.

LOCX protects the entire device itself with a lock screen that goes beyond the default Android lock screen. You can protect your devices with passwords, pins and gestures, and the pin approach is particularly effective for the smaller screens common to smartphones.

You can use LOCX to lack files, entire folders and entire apps, but you can also lock social media communication. Consider a scenario in which you lock a Facebook app but can’t necessarily lock each web browser that also has access to that information. With this app, you can, easily.

Another need aspect of this app is that whenever it senses an intrusion of any kind, it snaps a selfie. You can even configure that app to email you that picture or send it through some other means. An intrusion on your tablet, for instance, could be sent to your phone.

The only knock against LOCX: App Lock and Photo Vault is the user interface. It’s a bit cumbersome and unattractive and could do with a refresh. The good news is that you might not have to use it often, but if you’ll reconfigure the app often, you may want to look at some alternatives.


  • Lock apps and files
  • Lock social media communication
  • Advanced screen lock
  • Intruder selfies


  • User interface

- Fixed the bug about some users can't uninstall LOCX in some devices.

- Fixed Some crash issues

- Performance improvements

Potentially dangerous permissions

  • CAMERA: Required to be able to access the camera device.
  • GET_ACCOUNTS: Allows access to the list of accounts in the Accounts Service.
  • 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_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.
  • 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_WIFI_STATE: Allows applications to change Wi-Fi connectivity state.
  • 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.
  • INTERNET: Allows applications to open network sockets.
  • PACKAGE_USAGE_STATS: Allows an application to collect component usage statistics
  • 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.
  • 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_SETTINGS: Allows an application to read or write the system settings.
  • android.permission.MANAGE_ACCOUNTS
  • android.permission.REAL_GET_TASKS
Alternatives to LOCX: App Lock and Photo Vault
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