Everything the notebook could never do.
Customer accounts, credit sales, reminders in Somali, stock on the shelf and the money that came in this week. Four parts, one screen at the counter. Here is exactly how each one works.
Jump to a section

The bag goes over the counter. The balance goes in the book.
Barwaaqo Halal Market · Minneapolis
Every balance, down to the penny
Open a customer and the whole relationship is on one page: what they bought, what they paid, what is left. A credit sale takes about four seconds — less time than writing the name.
A credit limit for every customer
$400 for Hassan, who has shopped here since 2019. $75 for the man who moved in last month. DeynBook warns at the counter before a sale crosses the line.
Partial payments, no arithmetic
“$40 today, the rest on Friday.” Take the forty, and $312.00 becomes $272.00 before the customer has left the till.
Receipts printed and texted
One tap prints on the counter printer and sends the same receipt to their phone — item, amount, new balance, time.
Payment plans that hold
Split $312.00 across four Fridays at $78.00. The plan sits on the account and the reminders follow it, so nobody has to renegotiate at the register.
“When a customer says I already paid that, I show them the receipt with the date and the time. No more arguments at the counter.”
Sagal Warsame · Deeqa Halal Foods, Toronto
Deyn ledger
$12,486.50
Outstanding across 148 customers
Ayaan Warsame
Last purchase 2 days ago
Hassan Jama
Last purchase 19 days ago
Ubax Mohamud
Last purchase 34 days ago
Yusuf Abdi
Last purchase 4 days ago
Hassan Jama
+1 612 555 0188 · customer since 2019
Owed now
$312.00
Credit limit
$400.00
Avg. days to pay
11
- Nov 18Credit sale · rice, oil, sambuus+$32.00
- Nov 14Payment received · cash−$100.00
- Nov 09Credit sale · goat meat 4 lb+$35.00
- Nov 02Credit sale · weekly groceries+$145.00
- Oct 28Payment received · card−$60.00
Today 9:00 AM
6 in 10
Paid within two days
9:00 AM
The Friday send window
Let the phone do the asking
A reminder with the exact balance in it, sent on your schedule, in the language your customer speaks. You are not a debt collector — you are a shopkeeper who sent a polite text on Friday morning.
Somali and English, side by side
Write the template once. Each customer gets it in the language they actually read — “Waxaad ku leedahay $312.00” or “Your balance is $312.00.”
Rules, not reminders you have to remember
Anyone over $100 who has not paid in fourteen days, every Friday at 9:00 AM. Set it once in March and it is still running in December.
Quiet hours you control
Nothing sends before 9:00 AM, after 8:00 PM, or during Jumca. A reminder at eleven at night is not a reminder, it is a complaint.
Mass calls in your own voice
Record one message. DeynBook calls the customers who never open a text and plays it, then marks who picked up. Replies come back onto the account, timestamped.
“Before, I had to call people and it felt like begging. Now the message goes out Friday morning and by Saturday half the balances are paid.”
Fadumo Hassan · Hodan Grocery & Meat, Columbus
Know what is on the shelf
Counts that move when you sell. A warning before the basmati runs out on a Friday. And every dollar that left the store sitting next to every dollar that came in.
Low stock tells you first
Three bags of 10 lb basmati left against a minimum of twelve. You hear about it on Tuesday, not from a customer on Saturday.
Restock lists built for you
Everything under its minimum, grouped by supplier. Send it to the meat supplier and the dry-goods wholesaler in two taps.
Barcodes in, labels out
Scan at the till with a handheld or your phone camera. Print shelf labels and price tags on the same thermal printer that prints receipts.
Expenses in the same book
Rent, the van, the electric bill, the cash you handed the meat guy on Thursday. Logged against the month so the profit number is real.
A daily close that takes a minute
At 9 PM: what sold, what went out on credit, what came in, what is in the drawer — and the difference, if there is one.
What this replaces
A clipboard on a nail by the freezer, a text thread with the supplier, and a shoebox of receipts you open once a year for the accountant.
Shelf stock
412 items tracked
| Item | Stock | Price |
|---|---|---|
Basmati rice · 10 lb RICE-BAS-10 | 3 min 12 | $18.99 |
Sunflower oil · 3 L OIL-SUN-3L | 26 min 10 | $11.49 |
Goat meat · per lb MEAT-GOAT-LB | 41 min 20 | $8.75 |
Shaah spice mix · 500 g TEA-SHAAH-500 | 6 min 15 | $6.25 |
All-purpose flour · 25 lb FLR-ALL-25 | 18 min 8 | $14.00 |

Numbers you can read at the counter
No accounting degree, no export to a spreadsheet you never open. The report says what you are owed, what came in, and which money is going cold — in that order.
$5,820
is under two weeks old. This money collects itself.
$920
has been sitting past sixty days, across seven customers. That is the phone call.
The remaining $5,746 sits between two weeks and two months old — worth watching, not worth calling about yet.
Collected against credit given
Week by week, payments in against new credit out. When new credit out passes payments in, you are lending faster than you are collecting.
Who pays, and how fast
Average days to pay per customer, largest balances, and the people who always settle on Friday. Useful when someone asks for a higher limit.
Exports your accountant accepts
Any date range as CSV or PDF. Hand it over in April and answer no follow-up questions.
Collected · November
$9,318.25
How old is the money

Every sale at this counter lands in the report before the customer reaches the door.
The small things you only notice when they are missing
None of these get their own page in a brochure. All of them come up in the first month of running a shop on software.
Employee accounts
Every cashier gets their own login, so you know who wrote which entry.
Two stores or fifteen
One dashboard across locations, with per-store balances and stock transfers.
Customer portal
A private link where a customer can check their own balance. No app to install.
Works on what you already have
Any browser — the counter computer, a tablet, the phone in your pocket.
Survives a dead connection
The Wi-Fi drops in the back room. Keep recording; it syncs when it returns.
We do the data import
Photos of your pages or a spreadsheet. Our team types in every name and balance for you on Standard and Scale.
Somali interface
Switch the whole app to Somali — menus, buttons, receipts. No translating for staff.
A person on the phone
Support answered in Somali and English, from Minneapolis, during shop hours.
Label and tag printing
Shelf labels, price tags and receipts on an ordinary thermal printer.
A neighbour’s debt is private information
Everyone in the store knows everyone. That is exactly why the ledger has locks on it.
How we handle your dataEncrypted both ways
TLS in transit, AES-256 at rest.
Access by role
A cashier records a sale without seeing the whole ledger.
Every change is logged
Who edited a balance, from where, at what minute.
Backed up daily
Automatic, encrypted, kept for 30 days.
Never sold, never shared
Your customers’ debts are not a data product.
Lost phone, no problem
Sign a device out of your store from any other screen.
From the notebook to the counter in four days
Nothing about this is a migration project. You make one call, send photos of your pages, and we do the typing.
Fifteen minutes on the phone
How many customers carry a balance, how many people work the till, one store or four. We answer in Somali or English — whichever is easier.
Day one
We move the paper book for you
Text us photos of your pages or send a spreadsheet. Our team types in every name, every balance, every date. It is included on Standard and Scale, and you do not enter a single customer yourself.
Two business days
Set your rules together
Credit limits, the reminder day, quiet hours, which staff can edit a balance and which can only add one. We do it with you on a shared screen.
Day three
Open the shop as usual
The next credit sale goes in at the counter instead of the margin. Keep the notebook in the drawer for a month if it helps — most owners stop reaching for it in a week.
Day four
“The team moved thirteen years of my paper book into the system in two days. I did not type a single name.”
Abdirahman Yusuf · Barwaaqo Halal Market, Minneapolis

The notebook is not bad. It is just quiet.
It kept your store running for years and it never asked for a subscription. Here is the honest list of what it will not do.
Can you read it six months later?
Paper book
If the pen was good, the light was on, and nobody spilled shaah on that page.
DeynBook
The entry from June looks exactly like the one from this morning.
Does it add itself up?
Paper book
You add it up. Usually twice, because the first total felt wrong.
DeynBook
$12,486.50 across 148 customers, recalculated as you type.
What happens if it gets wet?
Paper book
You lose the page, and you lose the argument about what was on it.
DeynBook
Nothing. It is encrypted, synced, and backed up every night.
Does it text anybody?
Paper book
No. You do — one at a time, and you hate it by the fourth call.
DeynBook
Friday 9:00 AM, in Somali or English, with the exact balance in the message.
Can two people use it at once?
Paper book
Only if you buy a second book. Then the two books disagree.
DeynBook
The till, the back room and your phone show the same number at the same moment.
Does it tell you who is 60 days late?
Paper book
You remember. Mostly. The quiet ones you forget entirely.
DeynBook
$920 across 7 customers, sorted oldest first, with their phone numbers.
Keep the book in the drawer. It is a good record of twelve years — it is just a bad way to run next Friday.
Put the deyn book where you can see it
Start a free trial, or let us call you and walk through your own numbers. On Standard and Scale our team moves your paper pages in for you — most stores are running inside two business days.
Month to month. Cancel from the settings page. Somali and English support.