How does pinger text free work with the voice min?

I just downloaded pingers text free app for my iPhone because my phone was shut off and I still needed to be able to text and receive calls. We'll the texting I get and love that it works great and is completely free but I'm not sure what it means when I go to the dial pad and in the left bottom corner it says I have 11 more voice min? How do these work? Is it so many min for so much talk time or what?

Yes, it gives you free calling minutes too. In order to earn more, you can watch advertisements or download things.