Facebook has launched a new social media app aimed at school teenagers.
Members of Lifestage, currently only available on Apple devices in the US, upload pictures and videos based around feelings, likes and dislikes. These are then turned into video profiles.
All posts are public and there are no options to restrict viewing. The idea is to connect members of the same school, its creator said.
One expert told the BBC the lack of privacy settings was a concern.
School members can view each other’s profiles once the individual school has registered 20 members or more.
Users aged more than 21 are only able to view their own profiles.
However the app warns that it cannot guarantee whether all its users are genuine.
“We can’t confirm that people who claim to go to a certain school actually go to that school. All videos you upload to your profile are fully public content,” it says.
Lifestage has no messaging functionality but users can display contact details from other sites such as Snapchat and Instagram.
The app currently has a 2.5 star rating on the iTunes store with comments describing it as “kinda sorta creepy” and “confusing”.