Snapchat is a photo and video messaging app released in 2011 that allows users to take photos, videos, and send them to contacts. The key features are that media is only viewable for a limited time before disappearing, drawing tools can be used on photos, and the app uses existing phone contacts. It has grown tremendously in popularity with over 60 million photos and videos shared daily by its over 1 billion total users, making it one of the top apps, especially on iOS.