I really like that Duo can switch between Wifi and mobile network without reconnecting. However, usability is imo much better with Whatsapp. Duo still doesn't support calls on home screen on iPhones (calls are shown as notifications) and often fails to connect if the other person hasn't used the app for a day. It's annoying to first ask via Whatsapp to open Duo and then call there.

Indeed, I have also noticed those issues with Android phones. That is something that must be improved on.

This is the first I've heard of this app.

What is the point? Isn't this just hangouts all over again?

I can't understand why these companies keep rolling and re-rolling the same apps over and over.

Too many engineers on payroll, or engineers held onto by managers that are good at building a kingdom in the wrong place.

You can't individually switch off video on duo.