Is there an app that will convert text messages to voice and then allow me to reply using my voice and when that person replies it converts it to voice...back and forth like that? I would like to use this while text messaging while driving. This would allow me to keep my eyes on the road. ie. I hit a button and speak, it converts it to a text and sends it to the person I say. Then the other persons replies by sending a text, my phone vibrates and when I hit the button, the voice reads me their text, etc. Is there an app for that?