Snapchat is a free photo and video-sharing app used globally. Snapchat supports both iOS and Android phones. Snapchat markets itself as the most fun way to share a moment with friends and family. Snapchat allows users to add captions to their photos or videos and express themselves further with Filters, Lenses, and Bitmojis. A primary feature of Snapchat is that pictures and messages are only available for a short time before they become inaccessible to the recipients.