Tbh appAnonymous polling app tbh has been at the top of the App Store’s free apps chart for weeks — and Facebook took notice. 

On Monday, Facebook announced it bought the 3-month-old app. Tbh will remain a standalone app, but its founders will move into Facebook’s Silicon Valley headquarters.

Tbh, which is an acronym for “To be honest,” bills itself as “the only anonymous app with positive vibes.”

The app isn’t a standard messaging app like Yik Yak or Sarahah, though: Instead, users are presented with a series of prompts about their friends like, “Should DJ every party” or “Hotter than the sun” and four options for friends that best fit that description. 

The name of the app follows a similar trend among teens who use the phrase “tbh” on Instagram to say something nice about their friends. A tbh is used almost like a form of Instagram currency, since you can trade a tbh for a like on one of your photos. Whether or not the app’s name was inspired by that, tbh bears a lot of similarities to the trend.

Here’s how tbh works:

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Tbh is designed for users 13 and up, and allows those who sign up to select their school and grade level. But you can still use tbh if you’re in college or have already graduated.

Next, you’ll select your gender, which is the only thing about you that’s shared with other users. One cool thing about tbh: There’s an option for users who don’t identify as either male or female.

Tbh sets up the app like a game. You’re presented with a series of polls — 12 at a time — then four options of friends to choose from. Tbh says your responses are entirely anonymous.

See the rest of the story at Business Insider