Larwell Technologies
Business Systems

Payment App & Gateway Integration

Take UPI and card payments, matched to orders.

Payment gateway setup for UPI, cards, netbanking and wallets, with failed payments, refunds and settlement reports handled properly.

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What this is

Payment App & Gateway Integration, in plain words.

We connect your website or app to payment gateways so customers can pay by UPI, card, netbanking or wallet — and we make sure every payment is matched to the right order.

The tricky parts are what happens when a payment fails, is refunded or arrives late. We handle those properly with webhooks and clear reconciliation reports.

Problems we fix

Sound familiar? Here is what we do about it.

The problemCustomers pay but the order shows unpaid.
What we doWe use gateway webhooks, so the order updates even if the customer closes the page.
The problemRefunds are handled manually.
What we doRefunds are started from your admin panel and tracked to completion.
The problemPayments do not match the bank statement.
What we doReconciliation reports match each settlement to its orders.
What you get

Everything is written down before we start.

These are the standard deliverables. Your written scope lists exactly what is included for your project, so there is no confusion later.

Razorpay Cashfree UPI deep links Webhooks
  1. Gateway integration and testing
  2. Webhook and callback handling
  3. Refund and settlement flow
  4. Reconciliation reports
  5. PCI-aware handling
How we work

Four simple steps. No surprises.

1.
We write it down

We agree in writing what will be built, how long it takes and what it costs.

2.
We build in small steps

You get a link to working pages every week or two, so you can give feedback early.

3.
We set it up with you

We move your data across and train your team on the finished system.

4.
We stay after launch

Source code, a support period, and monthly care if you want it.

Questions

About payment app & gateway integration

Not answered here? Ask us directly — we reply within one working day.

Which gateways do you work with?

Most often Razorpay and Cashfree, plus UPI deep links. We can work with other gateways your business already uses.

Is it secure?

Card details go directly to the gateway, not your server. We follow the gateway's security rules and verify every webhook.

Can you add payments to an existing site?

Yes. We can add a gateway to most existing websites and apps.

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Need help with Payment App & Gateway Integration? Let's talk.

Tell us what you need in a few lines. We will reply with an honest plan, a timeline and a fixed price.

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