Snapchat

 Snapchat is a mobile app for Android and iOS devices. It's headed by co-founder Evan Spiegel. One of the core concepts of the app is that any picture or video or message you send - by default - is made available to the receiver for only a short time before it becomes inaccessible

Snapchat’s developer is a public company called Snap. It claims to be a camera company. As such, it creates other products, including hardware, like Snapchat Spectacles. but you can now use it for a range of different tasks, including sending short videos, live video chatting, messaging, creating caricature-like Bitmoji avatars, and sharing a chronological “story” that’s broadcasted to all your followers.