iOS App Payment Upgrade

My iPhone-only app still runs smoothly except for one critical piece: the payment flow. The current gateway is outdated, so transactions can’t be completed. All other modules are rock-solid; I simply need the checkout revived and future-proofed.

Here is what I need done: integrate modern, secure support for Apple Pay along with Stripe and PayPal. Once implemented, users must be able to choose any of those options, complete payment on the first attempt, and see the usual confirmation screens and receipts already wired into the app.

The codebase, originally delivered by Keshav Infotech, is clean and documented. I’ll provide full Xcode project access, existing backend endpoints, and test accounts for each provider. Your work should follow Apple’s latest review guidelines, use best-practice tokenisation and TLS, and pass TestFlight review without warnings.

I’m aiming for a quick turnaround—ASAP is ideal—so please let me know how fast you can plug in, refactor the payment module, and deliver a build ready for submission along with any necessary server tweaks or new keys. Acceptable delivery means all three gateways process sandbox and live payments reliably, and the app is re-signed for the current store requirements.

If you’ve recently shipped Apple Pay or multi-gateway apps, that’s even better. Let’s get this payment flow back online.