Is the Android Google Voice Calling App Free? The calls i made through googlevoice were listed as peak minutes?

I know that Google Voice says calling is FREE through the new number they give you, but all the calls I have made through my google voice application on my phone showed up online on my verizon account as peak minutes, meaning that I have to pay. Can anybody help me with this?|||Google Voice works by calling an access number and going from there so it's still a phone call. As far as help, leave Verizon. They will nickel and dime you to death. It's usually cheaper to pay termination and go somewhere else.