graBLOX is an Android app developed by MobilityWare (440 Exchange Suite 100 Irvine, CA, 92602).

graBLOX first became available on 17 Feb 2012. It is estimated that graBLOX has been downloaded between 1000000 and 5000000 times from the Play Store.

graBLOX 3.4 requires the following permissions:

Allows applications to access information about networks.

Allows applications to open network sockets.

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 access to the vibrator.

Allows an application to write to external storage.