06 · Fintech
Payze
Point of sale with WhatsApp self-checkout.
Point of sale and inventory for small shops. Customers can also scan, pay by transfer and get a receipt inside WhatsApp, without installing anything.
- Role
- Design + full-stack
- Timeline
- Jun – Jul 2026 (2 weeks)
- Team
- With Michael Olapade
- Links
- usepayze.xyzDemo
The problem
A corner shop already has its customers on WhatsApp and its money in bank transfers. What it doesn't have is a till that knows its stock, or a way to match a transfer to a sale.
01
Checkout in a WhatsApp chat
A shopper texts the store's code and Payze connects them to that shop. They snap the barcode on a bottle of water and it lands in their cart. "Done" shows the cart, "pay" creates a bank account number for that one order, and when the transfer lands Payze spots it on its own and sends a receipt with an invoice link.
In this live run at GoCrzy it took four minutes from the first message to the receipt: no app to install, no card machine and nobody at the till.
02
A till that runs on a laptop and a phone camera
Scan a barcode or tap a product, set a discount, take cash or a transfer. Stock levels update as you sell, with low-stock warnings before a shelf runs empty.
03
Every transfer matched to a sale
Each checkout gets its own Nomba virtual account, so a transfer lands against the right invoice automatically and shows up in the ledger, instead of a shop owner scrolling bank alerts.
Walkthrough
WhatsApp self-checkout, end to end
What I built
- 4 min
- from first WhatsApp message to receipt
- 2 wks
- to a working product
- 3
- ways to pay: cash, transfer, WhatsApp
- Merchant web app: POS, products, invoices, transactions
- Express API with Nomba virtual accounts and Twilio WhatsApp flows
Next project
Orbit
Computers for agents.
View case study