Duo App: Google’s Video Calling App
Duo App is a simple, fast one-to-one video calling app for everyone—whether you’re on Android or iOS, a fast or slow connection, in New York or New Delhi. Like Allo, Duo is based on your phone number, allowing you to reach anyone in your phonebook. And its simple interface fades away when you’re in a call, so it’s just the two of you.
One of our favorite features of Duo is Knock Knock, which shows you a live video preview of the caller before you pick up. Knock Knock invites you into the moment, making calls feel spontaneous and fun. Once you answer, Duo seamlessly transitions you right into the call.
Duo calls are in crisp HD video (up to 720p) and audio. We’ve optimized Duo to work well even on spotty networks, so if bandwidth is limited it gracefully adjusts quality so you’re still able to connect. We also seamlessly transition calls between cellular and Wi-Fi, so you don’t need to worry about what network you’re on. Finally, we built Duo with privacy and security in mind and all calls on Duo are end-to-end encrypted.