Chartboost is a San Francisco-based mobile game in-app programmatic advertising and monetization platform. Chartboost SDK enables developers to monetize on their mobile apps and connect advertisers to global in-app inventory. Chartboost's platform allows video game developers to create customized interstitial and video ads to promote new games. Developers have direct access to game data derived from Chartboost-enabled games. As of 2016, Chartboost had been integrated into more than 300,000 games with 40 billion game sessions per month. In May 2021, Zynga acquired Chartboost for $250 million.