Snapchat

Snapchat is an image messaging and multimedia mobile application created by Evan Spiegel, Bobby Murphy, and Reggie Brown, former students at Stanford University, and developed by Snap Inc., originally Snapchat Inc. One of the principal concepts of Snapchat is that pictures and messages are only available for a short time before they become inaccessible.

Originally, Snapchat was centered on private, person-to-person photo sharing. New features, including the ability to send short videos, communicate via video chat, and saving necessary chat information through a press on a message, were added through later updates. In October 2013, it introduced a "My Story" feature, letting users compile images, known as "snaps", into chronological storylines accessible to all of their friends. The Stories functionality was later expanded to "Live Stories", letting users at on-location events contribute snaps to a curated story available to all Snapchat users.

Two years later, it announced a new, global "Our Story" feature, letting all users contribute snaps at any time. An "Official Stories" designation verifies the accounts of notable public figures. Snapchat has also introduced "Memories", allowing users to save snaps and story posts to a private storage area; "Geostickers", city-specific stickers that can be placed on snaps and messages; and "World Stickers", which lets users add augmented reality objects into any scenery.

Source: https://en.wikipedia.org/wiki/Snapchat