Duo is the video calling app developed by Google which was released in 2016. It is one of the best available video calling app in the industry right now. Even in the slowest internet connections Google Duo seems to work smoothly.
The setup process is really easy once you have registered your mobile number in the app on your smartphone. The web version just asks you to connect your Gmail account and you are all set to go. You just need your Gmail account linked with the app. You’ll get a browser notification if you are logged in to choose whether you want to receive calls on your phone or the browser. The user interface shows either regular or narrow video frames while you are having a call.