Adapty

Adapty builds subscription infrastructure for mobile apps. Its platform handles in-app purchase management, paywall creation and the plumbing that keeps subscription state consistent across app stores, sparing developers the task of assembling a subscription backend or tracking store changes themselves. A single SDK and API give access to the company's tools on every platform. The stated mission is to "make apps rich"; customers include HubX, Facetune, Glam AI, Feeld, Flo and Philips.

The company's principal product, RevenueOS, covers subscription management, analytics, A/B testing and user acquisition, and powers more than 20,000 applications. Flow, its paywall builder, has hosted over 600,000 paywalls. Other components include subscription synchronisation, real-time revenue event streaming, refund reduction tools, revenue analytics with lifetime-value prediction and user acquisition attribution. The technical work spans mobile SDK and API development, paywall technology and real-time event streaming.

The scale of the operation is substantial: Adapty processes more than $3 billion in subscriptions annually, handles roughly 80 billion API calls a month and serves over 4 billion users. The company does not charge until an app earns $5,000 per month, after which it takes 1% of revenue. Its tools are aimed at developers, product managers, marketers and app owners in the consumer and subscription app market.