You probably know the pain of synchronizing subscribers among multiple platforms:
Adapty API is simple and fast web API that works with any programming language and any payment provider.
Simply let Adapty know which user made a purchase or activated a subscription. When a user installs an application Adapty automatically grants an access level after a successful web payment.
Make a purchase with receipt verification with a single method. Apple Promotion Offer supported right out of the box.
Restore purchases when a user re-install the app.
Link transaction to a user ID in your system.
Set any number of custom user attributes and set a separate IDs for each analytics/attribution services.
Link a user with transactions to an attribution such as ad source, campaign, ad, creative. AppsFlyer, Adjust, Branch, and Apple Seach Ads supported.