The app, created by a 20-year-old product manager at the company named Michael Sayman, lasted less than a year, with Facebook officially ending support for it on August 4, according to a spokesperson. Sayman joined Facebook when he was 18. Business Insider first reported the news of the app’s shutdown.

Lifestage opened to a phone’s camera, much like Snapchat does. Teens on the app — it only allowed people under 21 to sign up — could share pictures and videos of themselves that only people at their school could watch, much like the app Afterschool. Twenty registered users or more comprised a school.

But not long after it first debuted Lifestage, Facebook largely obviated the need for it by creating in-app Snapchat clones with Instagram Stories, Whatsapp Stories, and Facebook Stories. The company said in a statement, “We’ve gotten some helpful feedback from this app that we’re using to improve a number of visual and camera features across the Facebook app.”

It continued, “Teens continue to make up an important part of the global community on Facebook, and we’ve learned a lot from Lifestage. We will continue to incorporate these learnings into features in the main Facebook app.”

Facebook never shared user numbers for Lifestage. Overall, the company had 2 billion monthly active users as of June 2017. In November 2016, Facebook said that a billion of its monthly users only access the social network on their phones.

Of all Facebook’s standalone apps, only Facebook Messenger has reached a number of monthly active users — 1.2 billion in April 2017 — comparable to Facebook itself. The company’s other apps, including Facebook Slingshot, Riff, Rooms, Moments, another Snapchat clone called Poke (RIP 2012-2014), and its Instant Articles predecessor Paper (RIP 2014-2016) have not achieved widespread adoption. Facebook shut down the team responsible for these experiments, the Creative Labs division, last year.