Google has finally launched Duo, its super-simple video calling app for Android and iOS, after the company first announced it at its I/O developer conference in May 2016. Think of it as Apple’s FaceTime — Google Duo is designed for one-on-one mobile video calls and nothing else.
Google Duo isn’t much different from the other video calling apps, except that it gives a video preview of who is making the call, helping the recipient decide whether to answer or not. Google named this feature – “Knock Knock”. However, iOS users will not receive a Knock Knock video preview from incoming calls unless Duo app is already open.
The app requires only a phone number to register and offers end-to-end encryption. Plus simple one-tap calling and its ability to seamlessly handle your phone switching from Wi-Fi to cellular and back again without dropping the call make it easy to do a video call from anywhere.
According to the Google, “Duo is all about simplicity and quality. It’s all about video calling. There are no frills, no knobs or dials to adjust, it just works.”