One tablet, from the first sale to closing the day
Take the order, take the card, print the receipt, close the day. A POS carrying only what a shop actually does.
The app's own screen. The order on the left, the catalogue on the right.
3taps to paid
2card terminals supported
5 secto rearrange the grid
Why it is different
Learning it does not take a day
A new member of staff uses it on their first shift. There is one screen, what is used most is within reach, and wherever something could be confusing, the reason it works that way is written down.
The shop arranges its own catalogue
Putting the best sellers at the front is not alphabetical. Hold a tile for five seconds and arranging mode opens; drag to move it.
Add, edit and delete from the POS itself
Drag to reorder, let go to save
Anything that has been sold is hidden rather than deleted
Arranging mode, opened by a five-second hold.
A discount is a swipe, not a button
No further buttons were added. Swipe an order line right to discount it, left to take it off.
A percentage or an amount, with quick buttons for the usual values
The result is shown before it is applied
The discount prints as its own line on the receipt
Choose, see the result, then apply.
A customer is a phone number
It is what a cashier can ask for across a counter and what somebody can recite without carrying anything. A name works too.
Name a customer on an order and the sale earns them points
Nobody has to be a regular — most people who walk in are not on the books
A first-time customer is registered on the spot
Search by number or name; New registers one on the spot.
Payment
Paying happens where the catalogue was, with the order in view
The payment screen does not cover the POS. The right-hand side, where the products were, becomes the payment panel and the order stays on the left — because “what was that, and how much?” is asked at exactly the moment money is being taken.
Cash · card · store card · points
Pick a tender and it is collected right there. The amount pad, the request to the terminal and the card details all finish inside one screen.
Quick buttons for note denominations, and the exact amount
A note is written in place, with no popup
A tender the counter does not take is switched off in settings
The order stays on the left; payment happens on the right.
Take part of it, and the rest another way
There is no Split button. Splitting a bill is not something a cashier decides in advance — it is something they find out halfway through — so any tender can take part of the order.
What has been taken stacks under the order and is marked PAID
The balance carries straight over to the next tender
It records itself when the balance reaches zero — there is no Complete button
Take some of it in cash and the balance moves to the next tender.
When it is done, the change is the biggest thing on screen
No receipt popup appears. It finishes where it started, and the one number that has to be read before the customer leaves is the largest on the screen.
Drawer · print · view receipt · new sale
An order holding money that has been collected cannot simply be left
A tender taken and handed back is written to the books, cash included
The change, and the four things to do next.
Where money is at stake
The server recalculates every amount
What the tablet sends is not taken on trust. It says what is being sold and how many; the price comes out of the catalogue on the server, is recalculated there and recorded there. Lose the tablet, or let somebody tamper with it, and the takings are still the server's figures.
Tax rounds once
Never per line. The tablet and the server round the same way, so the two never differ by a cent.
A void is not a refund
Before the batch settles nothing has moved, so it is voided; afterwards only a refund is possible. The screen keeps the rule so nobody has to remember it.
One order, several tenders
Some in cash, the rest on a card — or on two cards. It finishes itself when the balance reaches zero.
Return part of a sale
One of the three bundles comes back, so one bundle is returned. Returned a piece at a time, the parts still come to exactly what was taken.
Scan to ring, scan to find
Scan a product barcode and it lands in the order; scan the barcode on a receipt and that receipt opens.
A receipt keeps its own copy
The name and the price at the moment of sale are stored with it. Change a price later and last year's receipt still says what was charged.
More than one shop
Each shop keeps its own catalogue and its own takings. Two POS terminals in the same shop share the catalogue and the card balances.
It sells through an outage
With no server to reach, the POS records the sale itself and carries on. It uploads when the line is back, and nothing is banked twice.
Regulars by phone number
One number a cashier can ask for finds the customer. Naming one is optional, and most people who walk in are not on the books. Points build up and spend like a tender.
Where the trade comes from
A postal code asked at payment is counted by area. A known customer is not asked twice, and walk-ins are counted too — they are most of it.
Set an order aside
Somebody steps away, so the order is named and parked. It shows who put it down, so it survives a change of shift.
A PIN, not a password
Staff sign in with four digits and the POS signs them in the moment the fourth lands. It is checked on the tablet, so a shop whose line is down can still open — and a wrong PIN belongs to nobody, so a colleague fumbling theirs never locks anyone out.
Count the drawer, note by note
A total is the one thing nobody has while looking into a drawer. Open with a float, count each denomination at the end, and the POS says what it expected and whether the till is over or short — in words, because a bare minus is a sign somebody has to notice.
Cash without the penny
Where the smallest coin is gone, the cash total rounds to the nearest five cents. Only the cash moves — the order, the tax and a card, store card or points payment all still settle to the cent — and what it moved is recorded and printed.
The end of the day
Closing is one screen
What was taken today, straight away
Cash, card and store card apart, with returns and voids on their own lines. Step through by day, week, month or year, and print the same figures.
Voids carry a count and no amount — no money moved
Total discount and total tax each get a line
The card terminal's batch close is on the same screen
Step through the period, then print exactly that.
Whose shift this is
Four digits and the POS knows who is at the counter. The name follows the sale onto the receipt, the held order and the day's log, so a question about a transaction has somebody to ask.
Checked on the tablet, so a shop with the line down still opens
The PIN is the name — there is no staff list on a screen customers can see
Off until a shop registers its own people
The first screen of the day, and until somebody signs in, the only one.
Count the drawer, note by note
A total is the one thing nobody has while looking into a drawer. Count each denomination and the POS says what it expected and whether the till is over or short.
Expected is the float plus every cash tender this POS rang
One pad beside the rows, not eleven fields to mis-key
Over and short are said in words, not left as a bare minus
What the drawer holds, against what it should.
The paper matches the screen
What the customer was shown and what comes out of the printer are the same sections in the same order. A reprint is stamped as one and does not open the drawer.
Korean product names print as they are
A barcode at the foot of the receipt — scan it and that receipt opens
A split sale prints one line per tender
The drawer opens on cash sales only
Automatic printing and the automatic drawer are separate switches
The shop's name, address and phone print at the top
The printer beeps when a sale finishes — switchable
A receipt in five sections. The paper is the same.
The shop itself
Shop details and receipts are set from the POS
A changed phone number or a risen tax rate is no reason to go and find a laptop. Correct it in the POS's Settings and every other POS in that shop, and the admin site, show the same thing.
Name · address · phone · tax rate · points rate
The shop's details belong to the shop, not to the device. Correct them on one POS and the rest use the same values.
The rate is stored with each sale — changing it never rewrites an old receipt
The rate is keyed on the POS's own pad, so no keyboard's comma can get into it
The same fields as the store settings in the admin site
Store, inside Settings — the same fields the admin site has.
What goes above and below the receipt
The shop's name, address and phone print themselves at the top. The header is what the shop adds underneath them; the footer is the closing line at the bottom.
A registration number, opening hours, a returns notice
Clear the footer and nothing prints there
Receipt, batch slip, period summary and test page share one heading
The two lines on the shop's own paper. The buzzer switch is above them.
Which tenders this counter takes
A counter with no card terminal switches cards off. The payment panel divides its width into four, so one tender nobody uses is width taken from the other three.
A setting on the POS, not on the shop — a terminal belongs to one counter
All four are on by default
The last one on will not go off — a POS that takes nothing cannot sell
Settings → General → PAYMENT TYPES.
Setting up and running it
Switch the tablet on and scan one QR
Install from a QR
Scan the code with the tablet and the app downloads. Enter the address and the key and it sells that day.
Updates take themselves
A new build is picked up when the POS next launches. Nobody has to walk round the shops installing it.
A different key per POS
One can be shut off without touching the others, and a lost tablet means reissuing one key rather than all of them.
Four languages
English, Korean, Spanish or French, and dollars, euros or pesos. The receipt alone prints in English whatever the POS is set to — the person taking it away is not the person who chose the language.
“If the card terminal does not answer, the payment fails. No way to key an approval by hand was ever built.”
Chosen so that a payment nobody approved can never be recorded as a sale.
What it does
The whole counter
Ringing up, taking the money, printing the paper and closing the day — all on the tablet, with an admin site behind it for whoever is not standing at the counter.
Sells with no connection
A dropped line does not stop the counter. Sales queue on the tablet and upload themselves the moment the server answers; the banner says how many are waiting.
Terminals, not typed numbers
Valor and PAX over the shop network. There is no way to key an approval by hand, so a payment nobody approved can never be recorded as a sale.
One bill, several tenders
Cash, card, store card and points in any combination. Every part is collected before anything is recorded, and returns go back per tender.
The paper matches the screen
The printed receipt is the same five sections the tablet shows, over Bluetooth, USB or the network. The drawer opens on cash sales only.
Regulars by phone number
One number a cashier can ask for across the counter. Points earn on the discounted subtotal before tax, spend like any other tender, and come back when a sale does.
The day, counted properly
Takings by tender, returns and voids on their own lines, card batches split credit and debit, trade by postal code. Counted in the database, not summed from the last hundred rows.
One key per POS
Every POS carries its own key, bound to one installation. Shut one off without touching the others; a key that turns up on a second tablet is flagged rather than passing quietly.
More than one shop
Each shop keeps its own catalogue, cards, customers and takings. The boundary is enforced on every read and every write, not by each query remembering.
It updates itself
A published build is offered on the next launch, downloaded and hash-checked before Android asks its one confirmation. Never mid-sale.
Cash without the penny
Where the smallest coin is going, a cash total is rounded to the nearest five cents — the rule the US Treasury recommends, or always up or always down if a shop needs it. Only cash: card, store card and points still settle to the cent. What it moved is on the receipt.
Every shift has a name on it
Staff sign in with a four-digit PIN, and the POS asks for it before it will sell. The name goes on the receipt, on the held order and in the day's log — so a question about a transaction has somebody to ask. Off until a shop registers its own people.
The drawer is counted, not guessed
Open with a float, count it note by note at the end of the shift, and the POS says what it expected and whether the till is over or short. It counts every cash tender that POS rang, so the figure is the drawer's own.
What you need
The equipment you already run
Tablet
Android 8.0 or newer, landscape. 10 inches or larger recommended
Card terminal
Valor or PAX, on the network. Sale, void, refund and batch close
Receipt printer
ESC/POS. Network (IP), Bluetooth or USB
Cash drawer
Wired to the printer's RJ11/RJ12 port
The terminal and the printer only have to be on the shop's network. The tablet connects to them directly, so there is no box in the middle.
