Shop management system — the counter
and the back office in one

A food-delivery app knows how to take your order. A point-of-sale knows how to ring it up. Almost nothing knows both, so the shop ends up with a tablet for orders, a second tablet for delivery, a paper roster on the wall, and a customer who is a stranger every single time they walk in.

Korat is built as one system with two faces. The QR on your table was minted by the staff member who opened the table. Your order lands in a queue the kitchen has to confirm before it starts cooking. The bill you read is the same set of rows the till reads. When you leave, the wrap-up sheet offers to add the people you ate with as friends — and a day later you can leave a review, but only because the database can prove you actually ate there.

That is the whole design. Nothing on the customer side is a copy of the shop's data, and nothing on the shop side takes the customer's word for anything. The server prices every line of an order and ignores the delivery fee the app sent it, because a trusted client field is just a self-service discount.

Every feature page on this site carries the thing it cannot do, in the middle of the page, in the same size type as everything else. Direct chat is one-to-one only, and the rooms a group or club gets instead are plain text with no reactions, attachments or calls. Calls are not end-to-end encrypted and there is no TURN server, so a call across some networks will fail. Online status is a heartbeat, not a socket — “online” means seen in the last ninety seconds. The split bill works out what each person owes; it does not take four separate card payments.

Some of that will change. Some of it is a deliberate refusal — there is no way to type your table number, because a number you can guess is a number a stranger can order onto your bill.

Create a business, pick its type, and the console assembles itself: a restaurant gets a kitchen display, table QRs, a menu with option groups and combos, delivery and reservations. A guesthouse gets rooms, room types with seasonal pricing rules, a bookings inbox and monthly tenancies with meter readings. A clinic gets appointments, treatment courses and patients. A shop gets a till, online orders and stock.

Everything past that is shared. Reports with revenue, average ticket and the top five sellers. A customer list built out of the sales ledger, with notes, tags, loyalty points and stamps. Clock-in with GPS, leave requests, shifts, overtime past eight hours a day, and payroll where an ordinary member of staff sees only their own pay.