AppEvent is a platform launched in 2009 that offers a free iOS app each day and shares app information with its users. It aims to popularize apps and has experienced considerable growth, with over 100,000 active users. The document outlines AppEvent's services for boosting apps, including featuring apps as the free app of the day and promoting them through its newsletter, Facebook, and Twitter followers. It provides the costs for different promotional options and emphasizes AppEvent's advantages like visibility to enthusiastic iOS users, strong conversion rates, and performance-based pricing where developers only pay for actual downloads generated.