Duo Google finally released its new video calling app Duo on Android as well as iOS. Unlike Hangouts, Duo does not require a Google account and can be activated using just your mobile numbers. Once you set it up, you can see all your contacts who are using Duo within the app and you click on them to start a video call, and it's as simple as that. One of the unique features about Duo is Knock Knock, where you see the other person even before you pick up the call. Duo is by far the simplest and easiest video calling app out there right now. iOS • Android BBC Colouring:...
Source: http://www.gsmarena.com/best_apps_and_games_of_the_week-news-20072.php
