Mobile apps have become a lucrative industry, with Apple reporting $25 billion in revenue from app stores in 2015. There are three main components to mobile app marketing: 1) social media and online engagement through accounts like Twitter and Facebook, blogs, and media coverage; 2) paid campaigning techniques like ads on Facebook, Twitter, and Google; and 3) organic growth tactics focusing on user retention and word-of-mouth through push notifications, sharing features, and reviews. While there is no single formula for success, combining paid campaigns with social media involvement and local marketing events helps drive downloads and exposure for new apps.