Born from one Baku shop's ledger

Get your shop out of the paper ledger.

Sales, credit, cash-up, stock and reports — all in one place. Zerb runs on the shop's own computer: your data stays with you, and the work does not stop when the internet does.

This is a simulation

  • Works without internet
  • Your data stays on your computer
  • 10 languages

The problem

A paper ledger does not add up wrong. It just forgets.

This happens every day. The answer to each one is a number:

Zerb shows each one on one screen. See it, fix it.

Live demo

Open the till

Rather than talk about it — let us show you.

This is Zerb's own screen — the real design, running right in your browser; the figures are samples. Nothing to install, nowhere to register — you press the buttons.

This is a simulation

Sales Mode Kassa is closed

The live demo below did not open in your browser. No harm done — here are the five moments of the day:

  1. Open the till in the morning — opening float 50.00 AZN.
  2. Sale #1 — scan the barcode, the product lands in the basket.
  3. Sale #2 — Credit: the debt is recorded with a name and a date.
  4. Switch the internet off — selling carries on, work does not stop.
  5. Close the till — Z-report: 2.00 AZN short, and nothing hidden.

The simulation sends nothing and remembers nothing — no name, no phone number, no cookie. Reload the page and the day starts from zero.

Features

What Zerb does

Seventeen jobs, four groups — from the moment of sale to the evening report. Every one of them grew out of a real shop problem.

The moment of sale

  • Till (POS) + barcode

    Scan the barcode and it lands in the basket. Type “İ” and products starting with “i” are found too.

  • Split payment

    One sale, up to three payment methods: cash + card + credit. Only the cash part reaches the till report.

  • Returns

    A customer brings something back: stock and cash correct themselves. If it was bought on credit, it comes off the debt too.

Money and debt

  • Cash-up

    A Z-report at the end of the day: expected cash, actual cash, over/short. The gap is not hidden.

  • Credit

    Who, how much, and since when. After 30 days it turns red. The reminder text opens ready in WhatsApp.

  • Reports and export

    End of day, profit, purchase liabilities — all of it goes to Excel and CSV, receipts to PDF as well.

  • Receipts and invoices

    Every confirmed sale keeps its receipt: look at it, download the PDF, draw an invoice for wholesale. With document number, payment method and cashier.

  • Per-product profit

    Which goods earn what: sales, cost and profit product by product. The number of products with no cost recorded is not hidden — what the total leaves out is written beside it.

Stock and control

  • Stock and purchases

    You ordered 10, seven arrived: seven is what gets recorded. The other three stay waiting.

  • Invoice OCR

    Photograph the supplier's invoice or upload the PDF — the lines read themselves: name, barcode, quantity, price, VAT. They are matched to your catalogue by barcode, costs update, or the whole thing becomes a purchase. The text is recognised on the device itself, the invoice goes nowhere; nothing is saved until you confirm.

  • Stocktake

    Count the shelf and hold it against system stock: surplus, shortage, match. A half-finished count is kept, and what was not counted is not touched.

  • Offline

    When the internet goes, the sale joins a queue and is sent on its own when the line returns.

  • Staff accounts

    Sign-in is by PIN, and every sale keeps a record of who rang it. You choose what the cashier will not see.

  • Backup

    The whole workspace goes into one file — events and transactions with their own ids and timestamps. Before an import, what is inside the file is shown.

Modules you switch on

  • Tables and kitchen

    Open a table, grow the order, send the ticket to the kitchen. Delete a line that already went in and a void ticket follows it. Split the bill, move the order to another table, write down the guest count. An open order is not a sale — that money is not in the till yet. Comes with «Restaurant» in Settings.

  • Technical card

    Write a dish's ingredients once — when it sells, they come off the stock. A portion's cost and margin work themselves out. Comes with «Restaurant», but can be switched on by itself.

  • Order history

    Closed tables stay with their lines: who opened, who closed, how long it stayed open, and what was voided after it was cooked.

Open the screens yourself

Open all five screens yourself — in your own order, with nothing to install. All of them in the program's own design.

This is a simulation

The live demo in this section did not open. Everything Zerb does is in the list above.

Business types

Which business is it ready for?

Shop, restaurant and wholesale — all three are ready today. The wholesale mode has not been tried by a real business yet.

Price

One account, the whole shop

VAT will be included. Paying for longer costs less. One account runs the whole shop — nothing extra for the number of tills or the number of staff.

The figure is not announced yet and payment is not open — when the price is ready we write to the list first, and nothing is ever charged without warning. Join the list

Q&A

Straight answers to the questions

Short, specific, as things are.

A fiscal cash register is required — is this legal?

Zerb is not a certified fiscal solution. Receipts are not fiscalised and carry no genuine fiscal ID or QR code. Zerb is your internal management system — it does not replace a fiscal register. If you have a fiscal obligation, it remains separate.

The same warning is shown inside the program itself.

My computer is old / slow.

Zerb is not heavy software — it runs in the browser on the shop's own computer. No separate server, no cloud subscription and no powerful machine are needed.

Exact minimum requirements (Windows version, RAM) will be published here after real testing across different computers.

Where is my data stored? What happens if you shut down?

On your computer — there is no cloud for sales data, and your sales, your customers and your prices are not on our server. Even if we vanished tomorrow, your data is already with you: export to Excel at any time, plus a full backup. There is no lock-in — when you leave, you take everything with you.

What happens when the internet goes down?

Nothing. Work carries on: the sale joins a queue and is sent on its own when the line returns — try it yourself in the simulation above, step 4. In a real shop, not one sale has passed through that queue yet.

What happens to the products in my old software?

They get moved across. We have done it once already: 2440 barcode lines from an old list were read in. Several barcodes for the same item were merged, which left 1578 products. Not one error. If you have an Excel or CSV file, we can move yours too.

Getting started

Join the list

When it is ready we will message you on WhatsApp. We send nothing else.

1 Join the list · 2 When it is ready we message you on WhatsApp · 3 You start Zerb in your shop

This form creates no account — no password is asked for, you are just joining the queue. Create account