Call Guard Free is an Android app developed by Megapps Ventures Inc. (Eschersheimer Landstrasse 42 Frankfurt 60322 Germany). Others apps created by Megapps Ventures Inc. are: SMS Blocker Lite, Reaction Test.

Call Guard Free first became available on 29 Nov 2011. It is estimated that Call Guard Free has been downloaded between 50000 and 100000 times from the Play Store.

Call Guard Free 3.7 requires the following permissions:

Allows applications to access information about networks.

Allows an application to initiate a phone call without going through the Dialer user interface for the user to confirm the call.

Allows applications to disable the keyguard if it is not secure.

Allows an application to call killBackgroundProcesses(String).

Allows an application to modify global audio settings.

Allows modification of the telephony state - power on, mmi, etc. Does not include placing 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.

Allows an application to read the user's call log.

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

Allows an application to read the low-level system log files.

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 read SMS messages.

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.

Allows an application to monitor incoming MMS messages.

Allows an application to receive SMS messages.

Allows an application to receive WAP push messages.

Allows an application to send SMS messages.

Allows access to the vibrator.

Allows an application to write (but not read) the user's call log data.

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

Allows an application to read or write the system settings.