Google Duo was a video calling app for Android (and iOS) that was designed for simple, high-quality video calls. It focused on ease of use and reliability, making it easy to connect with contacts even if they didn[SQ]t have the app. Key features included :

*

High-quality video and audio:

Duo prioritized clear calls, even on less-than-ideal network conditions.
*

Easy to use:

The interface was very straightforward, making it accessible to people of all technical skill levels.
*

Knock Knock™:

This feature let you see a live video preview of the caller before answering, adding a personal touch.
*

Group calls:

You could make video calls with multiple people.
*

Messaging:

While not its primary function, Duo also allowed for text messaging.
*

Integration with Google contacts:

Finding and contacting people was easy thanks to integration with your Google Contacts.

Important Note:

Google Duo has been discontinued and merged into Google Meet. If you[SQ]re looking for a similar app from Google, you should use Google Meet instead.