The OBi100 is a VOIP device that allows you to use your Google voice number to make free calls to any where in the US and Canada for free.
Purchase the OBi100 now on sale at Amazon for $39.24 as of Apr 5th, 2013.
OBiON is an app that enables you to use OBi on your on your Android and iOS devices. I don’t know how it works but you need to have you OBi100 connected and working at home to make and receive calls on OBiON app.
I made to calls using this app and I was told the quality that the other person was hearing was good but what I heard was a lot of breaking up. I am still testing it.