Server side receipt validation for Apple, Google Play, Steam and Stripe or any other service you may require - idempotent granting (no double credits, no lost purchases), subscription status handling, restore flows, and refunds.
I've shipped this across all four stores on a live platform with a credit economy and VIP subscriptions - I know every edge case that costs you money.
Starting scope - one store, validation endpoint, consumable or subscription.
Multi-store, wallets, and client integration quoted on request.
Server side receipt validation for Apple, Google Play, Steam and Stripe or any other service you may require - idempotent granting (no double credits, no lost purchases), subscription status handling, restore flows, and refunds.
I've shipped this across all four stores on a live platform with a credit economy and VIP subscriptions - I know every edge case that costs you money.
Starting scope - one store, validation endpoint, consumable or subscription.
Multi-store, wallets, and client integration quoted on request.