You will get a complete Stripe payment & subscription integration for web or iOS
Rising Talent
Project details
I add real, production-grade payments to your web or iOS app — Stripe or Apple In-App Purchase — with the part most freelancers skip: server-side verification. Entitlements are granted only after Stripe confirms through a signed webhook, never trusted from the client.
This isn't theory. I run Stripe in live mode across 8 shipped products, server-verified on every one. Open ide.swiftquantum.tech or edu.swiftquantum.tech right now and you'll see the billing working.
Why it's different:
• The right tool for your case — Stripe Checkout, Payment Element, or Apple IAP (StoreKit 2). Digital goods in an iOS app usually require IAP; services and web billing fit Stripe. I advise before we start, so you're not rejected at review.
• Secure by default — restricted keys, no secrets in the client, signature-verified webhooks, tested before live.
• You own it — clean source, a webhook/endpoint map, and a runbook, so your team ships the next change without me.
Whether you need one clean checkout or a full subscription system with a customer portal, message me one sentence about what you're selling and I'll reply with the right tier and a realistic plan.
This isn't theory. I run Stripe in live mode across 8 shipped products, server-verified on every one. Open ide.swiftquantum.tech or edu.swiftquantum.tech right now and you'll see the billing working.
Why it's different:
• The right tool for your case — Stripe Checkout, Payment Element, or Apple IAP (StoreKit 2). Digital goods in an iOS app usually require IAP; services and web billing fit Stripe. I advise before we start, so you're not rejected at review.
• Secure by default — restricted keys, no secrets in the client, signature-verified webhooks, tested before live.
• You own it — clean source, a webhook/endpoint map, and a runbook, so your team ships the next change without me.
Whether you need one clean checkout or a full subscription system with a customer portal, message me one sentence about what you're selling and I'll reply with the right tier and a realistic plan.
Programming Languages
JavaScript, Python, TypeScriptCoding Expertise
Localization, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$350
|
Standard
$900
|
Advanced
$2,000
|
|---|---|---|---|
| Delivery Time | 5 days | 10 days | 18 days |
Number of Revisions | 2 | 3 | 5 |
Number of Pages | 1 | 2 | 3 |
Design Customization | - | - | - |
Content Upload | - | - | - |
Responsive Design | - | - | - |
Source Code |
Optional add-ons
You can add these on the next page.
Additional Revision
+$60
Apple In-App Purchase (StoreKit 2)
(+ 7 Days)
+$400
Additional plan / product
+$80
Customer billing portal
+$120Frequently asked questions
2 reviews
(2)
(0)
(0)
(0)
(0)
This project doesn't have any reviews.
BB
Bahati Tadjuidje B.
Aug 21, 2026
Experienced Developer Needed for 60-90 min Research Interview on AI Coding Agents
JW
Jason W.
Jul 17, 2026
App Developer Needed - Build MVP Authenticator App (SwiftUI)
Excellent freelancer. Great communication and provided very helpful feedback.
About Eunmin
iOS + Full-Stack: SwiftUI, StoreKit 2, FastAPI, Next.js | 8 Apps Shipp
100%
Job Success
Seoul, South Korea - 4:53 pm local time
through App Review approval. If your app is half-built, stalled, or
stuck in review, that's the exact problem I solve.
WHAT I SHIP
- iOS/macOS in SwiftUI (Swift 6 strict concurrency) — architecture
to App Store approval
- StoreKit 2 subscriptions and IAP that pass review (8 approvals,
including Catalyst, watchOS, CarPlay)
- FastAPI backends and Next.js/React frontends for the same product
- Rescue work: half-finished codebases, rejected builds,
abandoned repos
PROOF YOU CAN CHECK IN 30 SECONDS
Search "SwiftQuantum" on the App Store, or open
ide.swiftquantum.tech. Everything I claim is running right now.
WHY THE BACKGROUND HELPS
My own products are quantum-computing tools — a 127-qubit circuit
IDE, a post-quantum cryptography scanner (NIST FIPS 203). Building
those alone is why ordinary product work moves fast for me, and why
I catch edge cases early.
Patent holder (AI systems). Excellence Award, Korea Open Data Forum
2024. 1st place, national startup competition. Former CTO of a
product serving 10,000+ daily users. IEEE member, presenting at
IEEE Quantum Week 2026 in Toronto.
HOW I WORK
Honest scoping — I'll tell you if something is a bad idea before
you pay for it. Daily written updates. Nothing I demo is fake.
Seoul time (UTC+9): you send feedback at end of day, you wake up
to progress.
Send me your spec, or even a rough idea. I'll reply with a plan, a
realistic timeline, and what I'd cut to ship sooner.
Steps for completing your project
After purchasing the project, send requirements so Eunmin can start the project.
Delivery time starts when Eunmin receives requirements from you.
Eunmin works on your project following the steps below.
Revisions may occur after the delivery date.
Scope & payment model lock
A short brief to lock one-time vs subscription vs Apple IAP, the exact plans and prices, and success criteria. You approve a written scope before I touch your code.
Secure key & environment setup
Set up Stripe restricted keys, test mode first, and wire your backend to create Checkout Sessions or PaymentIntents server-side. No secrets ever shipped in the client.