Caller is an Android app developed by AWARE Framework (University of Oulu Center for Ubiquitous Computing Finland).

Caller first became available on 06 Dec 2011. It is estimated that Caller has been downloaded between 100000 and 500000 times from the Play Store.

Caller 4.0.4 requires the following permissions:

Allows applications to access information about networks.

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 write to external storage.