Google Duo

Safe for most kids
Google Duo is a video calling app that also allows sending pictures, video, and voice messages.
Social Networking
Photo & Video

In-depth breakdown

Minimum Age Requirement
Messaging Capabillities
Google Duo allows individual and group video calls.
Location Sharing
No public location sharing.
Parental Controls
No built-in parental controls. Apple and Android parental controls can be used at the device level.
Requires user to sign in with a Google account.