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Payment Gateway API Integration | Hyper Software

Payment Gateway Integration for Apps and Software

Payment gateway integration for apps and software lets your users pay inside your web app, SaaS or mobile app, safely and reliably. Hyper Software integrates Razorpay, Stripe, PayPal, PayU, Cashfree and other payment APIs into custom systems, with server-side verification, webhooks, refunds, subscriptions and payouts.

What Payment API Integration Includes

A payment API integration connects your application's code to a payment provider so it can create orders, take payments and receive confirmations. Our work includes:

  • Gateway selection by country, methods and fees.
  • Checkout via hosted page, embedded form or mobile SDK.
  • Server-side order creation and signature verification.
  • Webhook handling for payment, refund and dispute events.
  • Refunds (full and partial) from your admin.
  • Subscriptions and recurring billing.
  • Split payments and payouts (marketplaces).
  • Multi-currency and international payments.
  • Reconciliation reports.

Development Technologies

Technologies & Video

How a Secure Payment Flow Works

  1. Your server creates an order with the gateway.
  2. The app opens the gateway checkout with that order ID.
  3. The user pays.
  4. The app receives a response, but does not mark the order paid yet.
  5. Your server verifies the payment signature or fetches status from the gateway.
  6. A webhook confirms the final status, even if the user closed the app.
  7. Your system updates the order and sends confirmation.

Gateways We Integrate

Gateway Typical use
Razorpay Indian businesses, UPI, subscriptions, Route payouts
PayU, Cashfree, PhonePe PG Indian payments with different pricing and features
Stripe Global SaaS, subscriptions, Connect for marketplaces
PayPal International buyers
CCAvenue Wide Indian method coverage
Regional gateways As needed for UAE, UK, US and other markets
Payment Gateway Integration

Client Testimonials

What Our Clients Say About Our
Payment Gateway Integration

Average Rating

4.9

(25) Customer reviews

Business website bilkul premium quality ki bani hai. Mobile responsive design aur clean layout ki wajah se customer experience bahut achha ho gaya. Highly recommended.

KS

Komal Sharma

Admin Manager

Professional web development service ke liye Hyper Software ko zarur choose karein. Team experienced hai aur har problem ka quick solution deti hai. Bahut achha support.

RJ

Ritika Jain

Brand Manager

Best platform for starting online business in India.​​​​​​​

HG

Hyper Group Adds

Startup Founder

If you are looking for website development services in India, Hyper Software Jaipur is a great choice.​​​​​​​

KK

Khushi Kumawat

Business Consultant

good professional lucking work in team. I am very happy all work in my webside. All services very nice Thank you sir​​​​​​​

VS

Vedic Sharma

Client

Common Payment Integration Bugs

Bug Cause Fix
Paid but order shows unpaid Webhook missing or failing Reliable webhook with retries
Order marked paid twice Duplicate webhook Idempotent handlers
Fake success from app Trusting client response Server-side verification
Wrong amount charged Currency units mix-up (rupees vs paise) Consistent amount handling
Refunds not reflected No refund webhook Handle refund events

Not sure where to start? Call or WhatsApp Hyper Software on +91 9079282750 or email info@hypersoftware.in for a free first consultation about Payment Gateway Integration.

Our Integration Process

  1. Choose gateway and flows.
  2. Build in sandbox/test mode.
  3. Implement verification and webhooks.
  4. Test success, failure, timeout, refund and duplicate cases.
  5. Go live with small real transactions.
  6. Monitor and reconcile.
Payment Gateway Integration

Payment Integration Cost

Work Indicative cost
Single gateway in a web app ₹15,000 to ₹40,000 (about US$180 to US$480)
Web + mobile app SDK integration ₹30,000 to ₹80,000
Subscriptions or split payouts ₹40,000 to ₹1,50,000
Payment bug audit and fix ₹8,000 to ₹30,000

Gateway transaction fees are charged by the provider.

Integrate It Yourself or Hire Experts?

Gateway docs are good, and a basic checkout can work in a day. The expensive mistakes are in verification, webhooks and edge cases.

  Quick DIY integration Expert integration
Server-side verification Sometimes skipped Always
Webhooks and retries Partial Complete
Edge case testing Rare Standard

Faq's

Frequently Asked Questions for Payment Gateway Integration

What is payment gateway integration for apps?

It's connecting your web or mobile app to a payment provider's API so users can pay securely and orders update correctly.

A single gateway in a web app usually costs ₹15,000 to ₹40,000. Mobile and advanced features cost more.

Razorpay, Stripe, PayPal, PayU, Cashfree, PhonePe PG, CCAvenue and others.

Yes. We use the gateway's mobile SDKs with server-side verification.

Because app responses can be faked or lost. Server checks and webhooks confirm the real status.

Yes. We fix failing, missing or duplicate webhook handling.

Yes. We integrate Razorpay Subscriptions, Stripe Billing and similar.

Yes, with Razorpay Route, Stripe Connect or similar split payment features.

Yes. Full and partial refunds from your admin with status sync.

No. We use hosted checkouts or tokenisation so card data stays with the gateway.

How We Helped: A Typical Payment API Project

An online exam platform marked registrations as paid based on the mobile app's response. Some users found ways to fake success and got access without paying, while others paid but stayed "pending" when their network dropped. We moved verification to the Laravel server, added Razorpay webhooks with idempotent handling and a nightly reconciliation job. Fake access stopped and pending-payment complaints dropped to near zero.

Why Choose Hyper Software for Payment API Integration

  • Security-first payment flows.
  • Experience across Indian and global gateways.
  • Backend and mobile app skills in one team.

People Also Search For

  • eCommerce payment gateway integration
  • Subscription platform development
  • Razorpay integration
  • Stripe integration
  • API testing
  • Third party API integration

 

People Also Ask

Common Questions & Answers Payment Gateway Integration

Create orders on your server, open the gateway checkout, verify payment on the server and handle webhooks.

A server-to-server message from the gateway confirming payment events.

Generally no; use the gateway's hosted checkout or tokenisation and keep card data off your servers.

Stripe is popular globally; Razorpay is popular for Indian SaaS.

Usually a few days to two weeks depending on features.

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