An iOS receipt joins the same access model.
Support a consistent membership experience across purchase channels.
Where this work fits
Opening checkout does not mean a customer has paid. Confirmation arrives separately, and a subscription can later renew, fail, expire, or be cancelled. Each change needs to leave the account with the right access.
I connected server-side purchase-receipt verification with subscription access. The work helped another purchase channel fit into the account experience without treating an unverified client claim as a completed purchase.
Verify an event before granting access
payment.confirmedSigned eventcheck
Different purchase channels, consistent access.
A card-payment event and an in-app purchase receipt arrive differently and require their own checks. I used signature and receipt verification before updating account access, then handled the subscription states beyond the initial purchase.
The skills behind the work
- Receipt verification
- Validate purchase information on the server before using it to change access.
- API contracts
- Keep the meaning and format of information consistent between communicating systems.
- Data modeling
- Give different product concepts clear records and relationships so updates have predictable meaning.
The billing work supported subscription growth and improved transaction success. Customers could move from a verified purchase into the membership features, with access tied to the subscription lifecycle.