Numbertank is an Android app developed by Shantai Technologies Limited.

Numbertank first became available on 25 Apr 2015. It is estimated that Numbertank has been downloaded between 500000 and 1000000 times from the Play Store.

Numbertank 1.35 requires the following permissions:

Allows an app to access approximate location. Alternatively, you might want ACCESS_FINE_LOCATION.

Allows an app to access precise location. Alternatively, you might want ACCESS_COARSE_LOCATION.

Allows applications to access information about networks.

Marker permission for applications that wish to access notification policy.

Allows applications to access information about Wi-Fi networks.

Required to be able to access the camera device.

Allows access to the list of accounts in the Accounts Service.

Allows applications to open network sockets.

Allows an application to modify global audio settings.

Allows an application to read the user's contacts data.

Allows an application to read from external storage.

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 an application to record audio.

Allows an application to change the Z-order of tasks.

Permission an application must hold in order to use ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS. This is a normal permission: an app requesting it will always be granted the permission, without the user needing to approve or see it.

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.

Allows an app to use fingerprint hardware.

Allows access to the vibrator.

Allows using PowerManager WakeLocks to keep processor from sleeping or screen from dimming.

Allows an application to write the user's contacts data.

Allows an application to write to external storage.