Duo

Duo is a simple, fast one-to-one video calling app for everyone

Duo 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.