At this year's Google IO Conference, Google released two meaningful social app Allo and Duo. Among them, Google Duo is a video calling application. It has been launched in the Google play application market on August 16, and has received a warm response. It has exceeded 5 million downloads in just one week. As a part of Google applications, Google Duo will certainly not be absent from the iOS platform. Google Duo has launched the App Store on August 25. Of course, it is also an off wall software. If you have conditions, you can download it and try it