Snap Inc., formerly Snapchat Inc., developed Snapchat.
Snapchat's main feature is that photographs and messages disappear after a short period.
The app originally focused on person-to-person photo sharing but now features users' 24-hour "Stories" and "Discover," which lets companies offer ad-supported short-form content.
It also lets users retain images in a password-protected "my eyes only" zone.
It also uses end-to-end encryption, with intentions to expand its use.
Evan Spiegel, Bobby Murphy, and Reggie Brown invented Snapchat.
It's recognised for being mobile-first and emphasising virtual stickers and augmented reality things.
Snapchat had 293 million daily active users in July 2021, a 23% year-over-year increase.
Over 4 billion Snaps are sent daily.
Snapchat's popularity among teenagers raises privacy worries for parents.