Control Center
One home screen that surfaces what needs attention — money to collect, what is overdue, and the day's profit at a glance. Start here; the book sorts the rest.
For small business
Your whole shop in one book. On your device, in your language.
Invoices, receipts, cashbook, credit ledgers and stock in one private book — offline-first, in Sinhala, Tamil or English, and always yours to export.
Works offline. No card needed. Export your data anytime.
- Works offline
- No card needed
- Export anytime
In closed beta — the web app is open to try now; the Android app is in closed testing.
One engine · your taste
One app. Three moods.
This is the same theming engine BillBook ships — not a picture of it. Choose a skin and the whole page recolours, live. Your choice sticks the next time you visit.
Atelier opens dark and luxe · Aurora goes cool glass · Ledger brings daylight. Same data, three rooms.
The invoice moment
Send a pro invoice in seconds. Share it on WhatsApp. Watch it get paid.
Build the bill, choose a premium design, and send it straight to your customer's chat. Record the payment and the same document becomes a print-ready receipt — the whole job, from first line to settled, in one calm flow.
Invoice design
Atelier — luxury minimal. Royal — classic formal. Aurora — modern fintech.
Nimal Stores 077 123 4567
INVOICE#INV-0042
- Tokyo Cement (OPC) 50kgRs 94,000
- Steel bar 12mm (per length)Rs 55,500
- Multilac Emulsion 4LRs 25,200
- PVC pipe 4 inch (5-ton)Rs 11,600
Total Rs 186,300
Balance due Rs 186,300
Share on WhatsApp
Atelier design
- Build Add the lines
- Theme Pick the look
- Share Send on WhatsApp
- Paid Mark it settled
One book for the whole business.
Invoices, credit, cash and stock — the things you track every morning and reconcile every night — kept together in one calm, private record.
Daily cashbook
Money in, money out, a running balance — open it each morning, close it each night.
Stock control
A simple stock book that flags what is running low and what is selling fast — from your real sales.
Customer credit ledger
A running balance for every customer, with statements you can share in a tap.
Recurring invoices
Bills that repeat on their own — rent, tuition, subscriptions — sent without the reminder.
Estimates & quotations
Send a quote, then convert it to an invoice the moment it is accepted.
Backup & export
Your book lives on your own device, and a full export means it is always yours to take.
Your books, in daylight.
A running record of money in and money out, with a guided end-of-day close. Open it each morning, settle it each night — and read exactly where the day stands.
Money in Rs 84,500
Money out Rs 31,250
Net today Rs 53,250
Sample figures, for illustration.
Smart, not showy
The tedious parts, done for you.
Ask a question, snap a bill, close out the day — and let BillBook do the counting. Every smart tool works from your own figures, in your own language.
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Smart Helper
Ask about your business in plain words — in English, Sinhala or Tamil — and get the answer back from your own books.
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Snap-a-bill
Photograph a supplier bill or receipt and it becomes an expense in your cashbook — no typing, no calculator.
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Smart Scan
Photograph an invoice or a stock list and each line item is read and filled in for you to review and save.
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Scan a statement
Snap a bank statement or a single-transaction screenshot and the entries land straight in your cashbook.
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Daily Close
One tap gives a clear end-of-day brief — what came in, what went out, where you stand — built only from today.
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Smart stock
Watches your real sales to flag what to reorder and what is selling fast, so shelf calls come to you.
Every smart tool is optional. Your figures stay on your device and only leave it — over a secure connection — the moment you ask a question or snap a bill. Never used for ads, never used to train models, never sold.
Reading the bill…
Invoice #1042
Bill to Saman Stores
Subtotal Rs 12,000
Total Rs 12,500
Paid
Made for here
Speaks Sinhala and Tamil — properly.
Full Sinhala, Tamil and English — not a half-translated menu with English hiding underneath. The whole app is built in all three, so you and your staff work in whichever one feels natural.
- Invoices, receipts and statements render in the right script — the same care a banknote gets.
- Switch language anytime in Settings — your books come with you.
From a blank screen to your first sent invoice
No setup wizard to dread, no manual to read. If you can keep a paper book, you already know how.
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Set up your shop
Add your business name, logo and document look, then pick your language — English, Sinhala or Tamil. That is the whole setup.
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Make your first invoice — or record a sale
Build a professional invoice in a few taps, or use Quick Add to log a sale, an expense or a cashbook entry on the spot.
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Share it, and track what is owed
Send the invoice on WhatsApp, then record full or partial payments and watch the outstanding balance settle to zero.
Everything stays on your device from the very first entry — no card, no account needed to begin.
Open the web appStart free. Upgrade only when it pays off.
The whole app is free to use — real invoices, a real cashbook, real ledgers, on your own device. When you outgrow the free limits, three plans add unlimited records, your branding, cloud backup and a monthly allowance for the smart assistant. Prices are in Sri Lankan Rupees.
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Free
For one business on one device, getting started.
Open the web appRs 0 forever
- 10 invoices a month
- 15 active orders · 40 cashbook entries a month
- 2 report exports a month
- One device, one business
- Smart-assistant taster — 3 smart actions a month, shared across Smart Helper, scans and summaries
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Premium
For growing shops that want everything premium.
Choose PremiumRs 350 / month
Rs 233 a month, billed yearly
Save Rs 1,400 a year
- Unlimited invoices, orders and cashbook entries
- Unlimited accountant exports
- Your logo and branding on invoices, with PDF customisation
- Cloud backup and multi-device sync
- Up to 5 business profiles and 5 staff users
- Priority support
- Includes the same 3 smart actions a month as Free
- Best value
Premium Plus
For Premium users who want a real monthly smart allowance.
Choose Premium PlusRs 480 / month
Rs 333 a month, billed yearly
Save Rs 1,760 a year
- Everything in Premium
- 100 smart actions a month — Smart Helper questions, bill and statement scans, daily summaries
- Most popular
Premium Unlimited
For power users who want the smart assistant with no monthly cap.
Choose Premium UnlimitedRs 670 / month
Rs 492 a month, billed yearly
Save Rs 2,140 a year
- Everything in Premium
- Unlimited smart assistant — no monthly cap on smart actions
Smart actions are shared across Smart Helper, Snap-a-bill, statement scans and daily summaries, and reset at the start of each month. Your records stay on your device by default, a full export is always available, and you can cancel anytime. Inside the Android app, plans are purchased through Google Play.
The honest fine print.
Plain answers on offline use, who owns your data, devices, the free tier and what the smart features actually do.
Does it work without internet?
Yes — BillBook is offline-first. You can create invoices, take payments, run the cashbook and update stock with no signal at all.
If you turn on optional cloud backup, it simply syncs the next time you are back online. The connection is a convenience, never a requirement.
Is my data safe? Do you sell it or show ads?
Your records live on your own device by default — invoices, receipts, cashbook, orders, stock and your customer and supplier ledgers stay in the app on your phone. Nothing is uploaded unless you turn on optional cloud backup, and even then it is secured per user so only you can read it.
We never sell your data or your customers’ details, and we never show ads. You can export everything, or permanently delete it, at any time.
Does it work on a computer, or only on a phone?
Both. BillBook runs in any modern web browser on a desktop or laptop, and it can be installed as a standalone app. There is also an Android app.
To see the same records across a computer and a phone, turn on optional cloud backup and sync — by default each device keeps its own local book.
How do WhatsApp orders work?
You capture and track customer orders through to fulfilment in the Orders screen, and share polished invoices and statements straight to WhatsApp.
So an order that arrives by message becomes a tracked entry, and the bill goes back the same way — in one place.
Is there a free version?
Yes. The Free plan covers a single business on one device and includes 10 invoices a month, 15 active orders, 40 cashbook entries a month and 2 report exports a month, plus a taster of 3 smart actions a month.
When you are ready for more, Premium removes those limits and adds your logo and branding, cloud backup and multi-device sync, invoice PDF customization, and up to 5 business profiles and 5 staff users — for Rs 350 a month or Rs 2,800 a year.
What languages does it support?
The entire app is available in English, සිංහල (Sinhala) and தமிழ் (Tamil) — fully translated, not a partial overlay.
You can switch languages in Settings, and your invoices and documents follow your choice.
Are the smart features private? What leaves my device?
The Smart Helper, Snap-a-bill and statement scanning are opt-in and require sign-in. They stay on your device until you use them.
When you ask the Helper a question or scan a bill, only what is needed — your typed question and the relevant figures, or the photo you scanned — is sent securely over HTTPS to the processing service to produce that answer or read that bill. It is never used for ads, never used to train models, and never sold. If you never use these features, none of that data leaves your device.
Is BillBook a payments app — does it touch my bank or card?
No. BillBook is a record-keeping tool, not a payments product. It never connects to a bank, card processor or payment gateway, and it never stores card or bank details.
It keeps your business records clear and complete; moving the actual money stays between you and your customer.
Still wondering something? Open the web app and try it — nothing to install, no card needed.
Start today Send a pro invoice
Send a pro invoice
in seconds.
Your invoices, credit, cash and stock in one private book you fully own — online or off, in Sinhala, Tamil or English.
Works offline No card needed Export your data anytime