Apple receipt checker is a simple convenient tool to debug in-app purchases/subscriptions in your app. Grab Base 64 encoded receipt data, the app’s shared secret, and get JSON-formatted receipt data.
Application will be sent securely and remain private
21000The App Store could not read the JSON object you provided.
21002The data in the receipt-data property was malformed or missing.
21003The receipt could not be authenticated.
21004The shared secret you provided does not match the shared secret on file for your account.
21005The receipt server is not currently available.
21006This receipt is valid but the subscription has expired. When this status code is returned to your server, the receipt data is also decoded and returned as part of the response. Only returned for iOS 6 style transaction receipts for auto-renewable subscriptions.
21007This receipt is from the test environment, but it was sent to the production environment for verification. Send it to the test environment instead.
21008This receipt is from the production environment, but it was sent to the test environment for verification. Send it to the production environment instead.
21010This receipt could not be authorized. Treat this the same as if a purchase was never made.
21100 – 21199Internal data access error.