Facebook's Slingshot App Is Snapchat — With a Catch

1. Posting a photo or video will reveal everything friends have sent you since the last time you sent something yourself.
2. Swipe through all of them. Once you've flicked away a post, it self-destructs, and you can see the next post.
3. There's no self-destructing timer like Snapchat.
4. You can also send a quick split-screen response.

Source: Facebook