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. The prototype for Snapchat was started by Brown and Spiegel as a project for one of Spiegel's classes at Stanford, where Spiegel was a product design major. Beginning as "Picaboo", the idea was to create a selfie app (application) which allowed users to share images that were explicitly short-lived and self-deleting. The temporary nature of the pictures would, therefore, encourage frivolity and emphasize a more natural flow of interaction.
When, in April 2011, Spiegel floated the product idea in front of his class as a final project, the classmates focused on the impermanent aspect of the potential product, and balked at the thought of temporary photos. Murphy was eventually brought into the project to write the source code for the application, and Picaboo first launched as an iOS-only app in July 2011. The application was relaunched in September under the name Snapchat.
How to Delete Saved Messages on Snapchat