The social information that is displayed for other people to see is subjected to the restrictions and permissions that you have defined in your account in each social network you are subscribed to. For instance, if your Facebook profile is only accessible to your friends on Facebook, then only they will be able to see your profile information when accessing your contact in CallApp. Moreover, CallApp does not store any login credentials on its servers; those are only stored locally on your device.
For more information contact CallApp Support
