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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 The current gateway is outdated, so transactions can’t be completed.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.
Project ID: 40407187
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Active 10 days ago
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136 freelancers are bidding on average £18 GBP/hour for this job

Hello, I understand you need to revive a solid iOS app payment flow by integrating Apple Pay, Stripe, and PayPal with modern security, streamlined checkout on first attempt, and seamless receipts. My approach is to refactor the payment module in a clean, testable way, ensure tokenisation and TLS follow Apple’s latest guidelines, and ship a build ready for TestFlight and App Store submission. I’ll wire sandbox and live modes for all gateways, coordinate server-side keys, and provide a small set of backend tweaks if needed. I’ll deliver a quick turnaround with clear milestones and a ready-to-submit build. Important questions for clear alignment: What iOS versions and device ranges must be supported? Do you have Apple Pay merchant IDs and Stripe/PayPal accounts with test/live credentials ready for integration? Are backend endpoints, webhooks, and server TLS certificates already prepared for multi-gateway flows? Will we require 3DS/SCA for Stripe and PayPal flows on iOS? Do you need in-app receipts and confirmation screens wired to the new gateways as-is, or any changes to UI/UX? Are there any logging or analytics requirements for payments (events, funnel metrics)? What is the expected submission timeline for TestFlight and the App Store? Any uptime targets or rollback plan if a gateway has issues during launch? How do you want to handle refunds or failed transactions post-launch? What is the strict submission timeline and any constraints on the Apple Pay integration that woul
£18 GBP in 31 days
8.9
8.9

Hi there, I understand your app is working well overall and the only issue is the outdated payment flow, and I can quickly help you replace it with a modern, secure multi-gateway setup including Apple Pay, Stripe, and PayPal. We will start with reviewing your current payment module and backend endpoints, then integrate Apple Pay along with Stripe and PayPal using proper tokenisation, secure handling, and Apple’s latest guidelines so everything works smoothly in both sandbox and live modes. Then we will test the full checkout flow end-to-end, make sure users can complete payments on the first attempt, validate receipts and confirmation screens, and prepare a clean build ready for TestFlight and App Store submission. I would request to connect once so I can review your codebase and get this fixed quickly. Thanks, Rahul A.
£6 GBP in 40 days
7.5
7.5

Hi - the issue here is not just swapping payment SDKs, it is making sure Apple Pay, Stripe, and PayPal all return the same clean order state to your existing confirmation and receipt screens. I’d start by reviewing the current checkout module, backend callbacks, keys, and receipt flow before replacing the outdated gateway. User opens checkout - selects Apple Pay, Stripe, or PayPal - payment token is created securely - backend confirms transaction - app receives success state - confirmation and receipt screens display correctly. Looks correct, but fails when each gateway reports status differently. Payment mismatch can cause failed orders in real use, so I handle it with unified payment states, sandbox/live testing, and server-side validation. Input - user payment choice. Processing - iOS SDK + backend verification. Output - completed payment. The part to get right early is payment status mapping.
£20 GBP in 40 days
7.1
7.1

With a robust 18 years of industry experience behind us, we at CnELIndia are not only deeply familiar with iOS application development but also possess particular expertise in integrating and optimizing payment gateways, like the ones you need for your app. This includes modern, secure solutions like Apple Pay, Stripe, and PayPal, all critical to keeping your app functional and ensuring smooth, reliable transaction processing. We understand the urgency of your project and are prepared to hit the ground running. Our commitment to sticking to timeframes without compromising quality has garnered us glowing testimonials from over 743 satisfied clients. We believe in being proactive and staying updated with the latest industry guidelines, which includes Apple's review policies and best practices for tokenization and TL technologies. In addition to ensuring your current payment flow is revitalized, we take a comprehensive approach by considering not only the frontend but also any necessary server tweaks and new keys that may be required for full implementation. This leaves you with a fully-functioning build ready for submission that can seamlessly handle sandbox and live payments across all three gateways. Let CnELIndia bring our experience and passion to help get your payment flow back online!
£8 GBP in 40 days
7.2
7.2

Hi, I will integrate Stripe and PayPal using their latest iOS SDKs and wire up Apple Pay through PassKit, all following Apple's current tokenisation and TLS requirements so it passes TestFlight without warnings. Sandbox testing on all three gateways before live submission. Please share the Xcode project so I can look at the existing payment module and give you an accurate turnaround time? Looking forward to hearing back from you. Thanks
£15 GBP in 40 days
6.6
6.6

Hello I am experienced full-time react-native & Flutter with both Android and IOS and web development and node js for backend and web front end reactJs & NextJS I will give more than 100% efficiency in completing this project. From the description, I understand that I will be a match for your requirements. My experiences match your description. Let's discuss the work. Looking forward to your response.
£20 GBP in 40 days
6.3
6.3

Hello There!!! ★★★★ (iOS payment system upgrade with Apple Pay + Stripe + PayPal multi-gateway integration fix & modernization) ★★★★ Project understanding: Your iOS app is working well except the payment module which is outdated and currently blocking transactions. You need a modern, compliant integration with Apple Pay, Stripe, and PayPal, ensuring smooth checkout, receipts, and App Store approval readiness. Services mentioned here based on project details ⚜ Upgrade iOS payment architecture with Apple Pay integration ⚜ Stripe + PayPal SDK integration with unified checkout flow ⚜ Secure tokenization + TLS compliant transaction handling ⚜ Fix existing backend endpoints for payment processing ⚜ Sandbox + live testing for all payment gateways ⚜ App Store / TestFlight compliance fixes (latest Apple guidelines) ⚜ Build signing, debugging & deployment-ready IPA delivery I have strong exp in iOS payment systems, Stripe/PayPal integrations and App Store deployments. I usually work with Objective-C/Swift apps, fixing legacy payment flows and upgrading them to modern secure standards without breaking existing UI or backend logic. Plan: audit current payment module → integrate Apple Pay + Stripe + PayPal → sync backend → test sandbox + live → fix Apple review issues → final TestFlight build. I can start quickly and prioritize fast turnaround so your payments go live again without delay. Warm Regards, Farhin B.
£8 GBP in 40 days
6.6
6.6

I’ve worked on updating payment flows in iOS apps where users needed seamless options between Apple Pay, Stripe, and PayPal. In one instance, I integrated all three gateways and ensured smooth transitions between sandbox and live modes, with full adherence to Apple’s review rules and security best practices. Since your code is clean and documented and you already have backend endpoints, I’d start by reviewing existing payment logic, then set up each gateway’s SDK or API. I’ll ensure tokenisation and TLS are correctly implemented to meet Apple’s current standards. How are your backend endpoints structured for handling payment confirmations? This helps decide if I need to adjust server calls or keys. I can have the payment module refactored and ready for TestFlight within a few days. I’ll provide a build with all three payment methods working flawlessly, tested on sandbox and live environments, plus any minimal backend tweaks required. Ready to jump in and get your checkout processing again quickly and reliably.
£7.50 GBP in 7 days
5.3
5.3

Hello Dear! Greetings from Toriqul Global Solutions! We are pleased to introduce our company as a reliable and experienced provider of Web Design & Development services. Founded and led by Engineer Toriqul Islam, a B.Sc. graduate in Computer Science & Engineering from Rajshahi University of Engineering & Technology (RUET), our team brings over 10 years of industry experience. At Toriqul Global Solutions, we specialize in building modern, user-friendly, and high-performance websites that help businesses grow and stand out in the digital world. Our design approach focuses on simplicity, elegance, and functionality to ensure maximum user engagement. Technologies We Use: Custom Websites Development Using ======>Full Stack Development. 1. HTML5 2. CSS3 3. Bootstrap4 4. jQuery 5. JavaScript 6. Angular JS 7. React JS 8. Node JS 9. WordPress 10. PHP 11. Ruby on Rails 12. MYSQL 13. Laravel 14. .Net 15. CodeIgniter 16. React Native 17. SQL / MySQL 18. Mobile app development 19. Python 20. MongoDB What you'll get? • Fully Responsive Website on All Devices • Reusable Components • Quick response • Clean, tested and documented code • Completely met deadlines and requirements • Clear communication We would be honored to discuss your project requirements and help bring your ideas to life. Thank you for your time and consideration. Warm Regards, Toriqul Global Solutions
£8 GBP in 40 days
5.2
5.2

Hi, there! I’m a senior iOS developer with strong experience in payment integrations, and I can quickly refactor your existing Xcode project to restore a reliable checkout flow with Apple Pay, Stripe, and PayPal using secure tokenisation and Apple’s latest guidelines. I’ll integrate and test all three gateways in sandbox and live modes, ensure smooth UI confirmation flows, handle any required backend adjustments or keys, and deliver a TestFlight-ready build that passes review standards and processes payments consistently without errors. Looking forward for positive response in the chatbox. Best Regards, Hassan H
£8 GBP in 40 days
4.9
4.9

✋ Hi There!!! ✋ The Goal of the project:- Upgrade your iOS app payment flow with secure Apple Pay Stripe and PayPal integration for reliable transactions. I have carefully read your requirement to replace the outdated gateway and implement a modern payment system within your existing clean Xcode codebase while ensuring compliance with Apple guidelines and smooth TestFlight approval. I am the best fit because I specialize in secure payment integrations with fast turnaround and stable deployment. * Apple Pay Stripe and PayPal integration with secure tokenization and TLS * Seamless checkout flow with confirmations receipts and backend sync * Full testing on sandbox and live with App Store ready build I will provide UI design database management testing and full source code delivery with deployment support. I have 9+ years experience as a full stack developer and have completed similar multi gateway iOS payment integrations successfully. Looking forward to chat with you for make a deal Best Regards Elisha Mariam!
£5 GBP in 40 days
5.0
5.0

Hello, I appreciate the opportunity to assist with your iPhone app's payment flow issue. I understand that you need a modern and secure integration for Apple Pay, Stripe, and PayPal to ensure seamless transactions and user experience. With extensive experience in mobile app development and payment gateway integrations, I have successfully implemented similar solutions in past projects. My proficiency in Xcode, along with a strong understanding of Apple's guidelines and security best practices, positions me well to deliver the results you need. To address your requirements effectively, I propose the following approach: - Review your existing codebase to understand the current payment module and architecture. - Integrate Apple Pay, Stripe, and PayPal, ensuring users can select their preferred payment method and complete transactions smoothly on the first attempt. - Implement best practices for tokenization and TLS to ensure security compliance and prepare the app for TestFlight submission. - Conduct thorough testing with sandbox and live environments to confirm reliability across all payment gateways. I am eager to start this project and confident in delivering quality results swiftly. Please let me know your timeline for launching this enhancement, and I am ready to discuss any further details. Thank you!
£5 GBP in 40 days
4.7
4.7

I can revive and modernize the iPhone app payment flow with Apple Pay, Stripe, and PayPal while keeping the rest of the app untouched. What I’ll do • Review the existing Xcode project and current payment module • Integrate/update Stripe, Apple Pay, and PayPal SDKs • Configure tokenization, TLS-safe payment handling, and provider keys • Connect payments to your existing confirmation screens and receipts • Make any required backend endpoint updates • Test sandbox and live payment flows • Re-sign the app for current App Store/TestFlight requirements Deliverables • Updated iOS build ready for TestFlight/App Store submission • Working Apple Pay, Stripe, and PayPal checkout options • Sandbox + live payment verification • Brief setup notes for keys, certificates, and future maintenance Timeline Estimated 3–7 days, depending on current backend/payment code.
£8 GBP in 40 days
4.6
4.6

Hi, I can quickly upgrade your payment flow and integrate Apple Pay, Stripe, and PayPal properly. I’ve worked on iOS apps with secure payment integrations, so I’ll refactor the existing flow, implement all three gateways using best practices (tokenization, TLS), and ensure smooth transactions with proper confirmations. I’ll test both sandbox and live modes, make sure everything passes TestFlight, and deliver a build ready for App Store submission. Ready to start immediately and get this fixed fast.
£8 GBP in 40 days
4.7
4.7

I can quickly step in and restore your payment flow with Apple Pay, Stripe, and PayPal integration, keeping everything aligned with Apple’s latest guidelines and secure tokenization standards. Since your codebase is already clean and stable, this should be a focused refactor rather than a full rebuild. I’ll handle: Seamless checkout with all three payment options Proper Apple Pay setup (merchant IDs, certificates, testing & production) Stripe + PayPal SDK integration with secure backend validation End-to-end testing (sandbox → live) Ensuring TestFlight + App Store compliance Timeline: I can deliver a working build within a few days after getting access, with quick iterations if needed. If you share the project and backend details, I can start immediately and get your payments back online without disrupting existing flows.
£5 GBP in 40 days
4.4
4.4

Hi there! A broken payment flow is not a feature gap it is a revenue tap turned off. The good news is that with a clean, documented codebase already in place, this is a focused surgical job, not a rebuild. I can move fast. What I will do. Replace the outdated gateway module with three parallel integrations: Stripe using their latest iOS SDK with full tokenisation, PayPal via the current Pay Later SDK, and Apple Pay wired through PassKit with merchant identifier and entitlement configured correctly for App Store submission. All three share a single unified checkout coordinator so adding a fourth gateway later is one class, not a rewrite. Security handled properly. Card data never touches your server. Stripe and PayPal tokenise on-device. Apple Pay passes encrypted payment tokens directly. TLS enforced on every backend endpoint involved in the flow. This passes Apple's payment entitlement review without flags. Your existing confirmation screens and receipt logic stay untouched. I connect the new payment layer to your current success and failure handlers. Users see identical post-payment UX regardless of which gateway they chose. TestFlight first. I deliver a sandbox-verified build through TestFlight before any live keys are touched. All three gateways tested end-to-end in sandbox, then live credentials swapped and re-verified before final submission build.
£8 GBP in 40 days
4.5
4.5

Hi, I understand the urgency of upgrading your iPhone app's payment flow to support Apple Pay, Stripe, and PayPal seamlessly. With extensive experience in iOS development and payment integrations, I’ll ensure your checkout module is modern, secure, and compliant with Apple's latest guidelines. I’ll work through your clean, documented codebase, integrate all three gateways with best-practice tokenization and TLS, and fully test both sandbox and live transactions. Expect a smooth refactor that includes server tweaks if necessary, delivering a build ready for TestFlight review without warnings. I can start immediately and aim to deliver the updated payment flow within 4 days, ensuring all payment options work flawlessly with confirmation screens and receipts as per your requirements. Do you have any existing preferences or constraints for the server-side adjustments related to payment gateways? Best regards,
£7 GBP in 23 days
4.5
4.5

Hi, I can tell the real risk here isn’t the app itself, it’s getting payments restored without disturbing the stable modules already working in your iPhone app. Since the codebase is clean and documented, I can plug into the existing payment layer, refactor the outdated gateway, and integrate Apple Pay, Stripe, and PayPal using secure tokenisation, TLS, current SDKs, and Apple review-compliant flows. I’ve handled iOS payment integrations, API-driven checkout flows, sandbox/live testing, receipt handling, and backend payment key configuration. I’ll make sure users can select any of the three gateways, complete payment smoothly, and land back on your existing confirmation/receipt screens without breaking the current experience. I’ve shared an initial estimate based on your description, and once we go over a few technical or functional details, I’ll confirm the exact cost and delivery schedule. I can start by reviewing the Xcode project, existing backend endpoints, provider accounts, and signing setup, then deliver a TestFlight-ready build with required server tweaks. Is the current iOS codebase written mainly in Objective-C, Swift, or a mix, and does the existing backend already create Stripe/PayPal payment intents/orders? Looking forward to your reply so we can finalize the exact plan. Best regards, Asad
£7 GBP in 92 days
4.4
4.4

Hello, I have reviewed your requirement and understand that your iPhone app’s payment module needs to be upgraded to support modern gateways so users can complete transactions reliably using Apple Pay, Stripe, and PayPal. I’ve worked on similar iOS payment integrations where outdated gateways were replaced with secure, tokenized flows that comply fully with Apple’s latest review guidelines. With 8 years of experience in iOS development and payment gateway integration, I specialize in implementing Apple Pay, Stripe, and PayPal in a clean, secure, and review-safe manner inside existing codebases. My approach would be: • Review your existing Xcode project and current payment flow • Integrate Apple Pay using PassKit with proper merchant configuration • Add Stripe and PayPal SDKs with secure tokenization and TLS handling • Connect the gateways to your existing backend endpoints • Ensure confirmation screens, receipts, and callbacks work as expected • Test sandbox and live transactions for all three methods • Prepare a TestFlight-ready build compliant with current App Store rules • Document any new keys, certificates, or server updates required LET’S RESTORE YOUR PAYMENT FLOW WITH MODERN, SECURE GATEWAYS THAT WORK FLAWLESSLY ON THE FIRST ATTEMPT Looking forward to working with you. Thanks
£8 GBP in 40 days
5.0
5.0

Greetings, I can confidently handle this iOS App Payment Upgrade project. Being a Senior iOS Developer with a track record of successful app enhancements, I am well-equipped to integrate modern payment gateways seamlessly. My expertise lies in implementing secure support for Apple Pay, Stripe, and PayPal while ensuring smooth user experience and compliance with Apple’s guidelines. I am ready to dive into the codebase provided by Keshav Infotech, refactor the payment module, and deliver a fully functional build for submission. Let's bring back the seamless payment flow to your app. Message me on freelancer.com to discuss further details. You can review my profile for more information. I will deliver: - Integration of Apple Pay, Stripe, and PayPal - Smooth payment flow with confirmation screens - Compliance with Apple's latest guidelines Regards, Moeed
£5 GBP in 40 days
4.1
4.1

Weymouth, United Kingdom
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