Here is a Historical record showing Facebook vs. Snapchat war for the TimePass Mobile Chat Apps of Teenagers and Folks in 20s.
Dec-12 Facebook launched "Poke" app. Poke allows users to send instant messages, photos, or videos that vanished within seconds
Nov-13 Facebook tried to acquire Snapchat but failed Snapchat Spurned $3 Billion Acquisition Offer from Facebook
Jun-14 Facebook launched "Slingshot" app Slingshot lets users trade ephemeral photo- and video-based messages.
Mar-16 Facebook buys popular face swapping app Masquerade for silly selfies Masquerade's app lets users overlay playful, animated filters over your face using your phone's selfie camera.
Oct-16 Facebook implemented “Masks” for Facebook Live A new tool that overlays virtual mask filters on streaming video, also similar to the way Snapchat does. The first batch of masks are Halloween-themed
Nov-16 WhatsApp is testing a Snapchat-style Stories feature in new "Status" tab WhatsApp is looking to copy Snapchat’s popular Stories feature. The new ‘Status’ feature will let users upload photos, just like Instagram or Snapchat stories Article