Retail POS & billing terminal
A real till, running in your browser. Serve a customer, take cash and card on one bill, discount something and watch the system check it against cost, then print the receipt and export an A4 invoice.
Money that never drifts
Every figure above is stored as a whole number of cents, not a decimal. Discounts
are split across lines with allocate(), which hands out
the leftover cent instead of dropping it - so the lines always add back to the total, exactly.
The discount floor
Try discounting a bill by 60%. The system refuses, because the price would fall below cost - and it names that cost in a cipher, not in digits, because the screen is facing a customer at that moment.
Real documents, not screenshots
Export PDF renders a genuine A4 invoice with a letterhead, and the receipt is laid out for an 80mm thermal roll. In a delivered system these go straight to the printer over ESC/POS.
Pricing you control
Open Smart pricing and move the transport, margin and discount-buffer percentages. Every shelf price in the shop recalculates live, and you can see which items would actually change.
Want this for your shop?
The demo is a fraction of what a delivered counter does - this one has no suppliers, deliveries, staff accounts, branches or WhatsApp bill sharing wired in. Those are a conversation, not a problem.