Duo is easily one of the coolest apps released in the last month. Developed by Google, this free video-calling app was officially launched mid-August and it has one trick that makes it immediately exciting. When you make a call, Duo will begin video capture and display this on the receivers screen before they have even answered.
It’s a subtle addition to video calling that makes the process feel a little nicer. That said Duo doesn’t offer much else in the way of innovation, it’s a typical, easy Google app that just works and there’s no good reason not to give it a try.