Last Monday, the accidental launch of Facebook’s (s fb) newest app gave users a sneak peek into Slingshot — which appeared from photos to be an extension of its previous ephemeral messaging app, Poke. On Tuesday, users will finally get to use the app, developed Facebook Creative Labs, as it rolls out in the U.S. to both iOS (s aapl) and Android (s goog).

The second Creative Labs app to be produced after Paper, Slingshot is a lightweight app that actually has very little traditional “Facebook” design cues. Users can choose to sign up via Facebook or simply by phone number, and begin sending “slings” — ephemeral photos or video — to friends in your contact list. From there, the mechanics work very similarly to apps like Snapchat or Taptalk: Users take a photo or a video, add text or drawing, and send it off to friends.

Screenshots courtesy…