Google has released Google Duo, a very simple video calling app for Android and iOS.

Duo is all about ease of use. There’s no separate account to create, no need to build a new contact list: the app can use your phone’s contact list already, and start a video call with a click.

A “Knock Knock” feature shows users live video of any caller before they pick up, giving a quick idea of where they are and what they’re doing.

The app does its best to keep you connected, seamlessly switching between mobile data and wifi as necessary, and automatically adjusting resolution to match available bandwidth.

Just tap a contact to call

Google hasn’t forgotten about security, either– end-to-end encryption keeps snoopers out, even on insecure wifi hotspots.

So, Google competes with FaceTime. And, umm, Hangouts, sort-of. Which means their strategy for the future is, uh… (We’ll get back to you when we’ve figured that one out.)

Google Duo is available now for Android and iOS.