Download Google Duo Apk File Free. When Google is there for all of your needs, here you go with Google new apps that allow you to do one-to-one video calling for everyone. Google Duo is a video calling app designed for everyone and having simple design, reliable as we all know and fun so you don’t miss any moment. Enjoy it’s simple interface to connect with your loved one and do video call. You can also see the caller right before picking up it’s call by using Duo’s Live Preview feature (Knock Knock). Experience high quality video without worrying about your connection, you are good to go whether you are connected to the Wi-fi or it’s mobile data. You can call your friends not just on android but on iOS too by using Google Duo.