RevenueCat

Founded in 2018 as a Y Combinator graduate, RevenueCat provides monetization infrastructure for mobile applications. The company's platform handles in-app subscription management and purchase processing across iOS, Android, and the web, abstracting away the complexities developers face when implementing payment systems.

RevenueCat's platform now powers in-app subscriptions for over 79,000 applications worldwide and processes more than $12 billion in annual purchase volume. The system handles over 4 billion API requests daily with 99.99% uptime, and is integrated into more than 40% of newly shipped subscription apps. Its client base ranges from individual developers to organisations such as OpenAI's mobile team.

The platform includes tools for remote paywall configuration, A/B testing with up to four simultaneous variants, predictive customer lifetime value forecasting, and automated refund handling. Technical domains span monetization infrastructure, subscription management, and API processing at scale.