Facebook launches Flash , a mobile messaging app for photos , 2017 . Like Snapchat , it lets users send messages that disappear after a few seconds . ` When everyone participates , there 's less pressure , more creativity and even the little things in life can turn into awesome shared experiences . '' With Slingshot you ca n't view an incoming message until you respond with your own . Slingshot succeeds Poke , a mobile app that Facebook shut down last year .
Facebook launches Flash , a mobile messaging app for photos , 2017 . Like Snapchat , it lets users send messages that disappear after a few seconds . With Slingshot you ca n't view an incoming message until you respond with your own . Slingshot succeeds Poke , a mobile app that Facebook shut down last year .