Google wanted its very own version of FaceTime, so the company built a video chat app called Duo. Announced today onstage at the I/O developer conference, Duo is a dead-simple and blazing fast way to start video chats. The app opens into a selfie-cam video preview of yourself with a big red button to start a call. Unlike FaceTime, which only works on Apple devices, Duo is compatible with both iOS and Android devices, so long as they have its app installed.
Duo also varies from FaceTime with its "knock knock" feature, which gives users a preview of the video call they're about to enter before they actually accept it. (Make sure you tune in through the end to watch Erik Kay, director of engineering, communications products, accidentally hang up on his daughters. lol.)