What a waste of time

Your best bet people is to learn how to create an asterisk box.
Put Google voice on it. Then share the service with your phone using any free VOIP soft phone for your smart device.
Because this app is a complete rip off.
I think the best model for them would be to charge $8.00 and give you one year free.
Because whatsapp, ovoo, google hangouts are FREE

Hawaiideveloper about Phone for Google Voice & GTalk, v3.0.1