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.
GST billing · India 
Pukka GST bills, in seconds. On your device, in your language.
Zahlon GST is GST billing software for Indian shops — tax invoices with CGST, SGST and IGST worked out for you, UPI QR on every bill, udhaar, cashbook, stock and your GSTR-1 and GSTR-3B figures in one private book. It works offline, speaks English and 8 Indian languages, and your data is always yours to export.
Works offline. No card needed. Export your data anytime.
- Works offline
- No card needed
- Export anytime
Available now on Google Play and the App Store — and the web app runs in any browser.
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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.
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Send a pro invoice in seconds. Share it on WhatsApp. Watch it get paid.
Build the bill, pick a premium design, and send it straight to your customer's chat. Log the UPI payment and the very same document turns into a print-ready receipt — the whole job, from first line to settled, in one calm flow.
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Daily cashbook
Money in, money out, a running balance — open it each morning, close it each night.
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Stock control
A simple stock book that flags what is running low and what is selling fast — straight from your real sales.
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The tedious parts, done for you.
Ask a question, snap a bill, close out the day — and let Zahlon GST do the counting. Every smart tool works from your own figures, in your own language.
New here — but nothing to hide.
No star ratings to borrow yet, and no inflated numbers. Just what is plainly true about how Zahlon GST works — and who it is built for.
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Live on Google Play and the App Store
The Android and iPhone apps are published and downloadable today — and the web app runs in any browser, on any device.
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Made for Indian GST
CGST, SGST and IGST, GSTIN checks, HSN codes and your GSTR-1 and GSTR-3B figures — built for how Indian shops actually bill.
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Your books stay yours
Works offline, your data lives on your device, and you can export it anytime. No lock-in.
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No ads. Never sold.
Zahlon GST makes money from a simple subscription — never from ads, and never from selling your data.
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You get paid directly
Add your own UPI QR and money goes straight to your bank account. Zahlon GST never touches it.
Real reviews will appear here as people leave them.
Everything your shop runs on
One book for the whole business.
Invoices, udhaar, cash and stock — the things you track every morning and tally 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 — straight from your real sales.
Customer udhaar ledger
A running balance for every customer, with statements you can share on WhatsApp in a tap.
Recurring invoices
Bills that repeat — rent, tuition, subscriptions. Each one is ready on the day it falls due; you generate and send it in a tap.
Suppliers & bills to pay
The other half of the book — purchase bills, what you owe each supplier, and every payment you make.
Payment reminders
Unpaid invoices lined up by how much money is at risk, so you chase the ones that matter first.
Cheques
Record a post-dated cheque the day you take it, and get a reminder on the day it can be banked.
Profit & finance
Your real profit, what you are owed, stock health, and the monthly sales that cover your fixed costs.
GST returns, ready for your CA
CGST, SGST and IGST split on every bill, and your GSTR-1 and GSTR-3B figures built from your own invoices — with a CSV for your accountant, free.
Backup & export
Your book lives on your own device, and a full export means it is always yours to take.
The invoice moment
Send a pro invoice in seconds. Share it on WhatsApp. Watch it get paid.
Build the bill, pick a premium design, and send it straight to your customer's chat. Log the UPI payment and the very same document turns into a print-ready receipt — the whole job, from first line to settled, in one calm flow.
Invoice design
Console — white paper, iris accent, mono figures. Slate — the same layout with a graphite accent.
Sharma Hardware GSTIN 27AAPFU0939F1ZV
TAX INVOICE#INV-0042
- Cement 50 kg (×10 bags)₹3,800
- PVC pipe 4″ (×6)₹2,700
- Wire nails 5 kg₹900
- Wall putty 20 kg (×2)₹1,600
- Taxable value₹9,000
- CGST 9%₹810
- SGST 9%₹810
Total ₹10,620
Balance due ₹10,620
Share on WhatsApp
Console design
- Build Add the lines
- Theme Pick the look
- Share Send on WhatsApp
- Paid Mark it settled
Smart, not showy
The tedious parts, done for you.
Ask a question, snap a bill, close out the day — and let Zahlon GST 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 or any of 8 Indian languages — 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 every line item is read and entered for you — just review and save.
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Scan a statement
Snap a bank or UPI 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…
Tax invoice #1042
Bill to Sharma Hardware
Taxable value ₹10,000
CGST 9% ₹900
SGST 9% ₹900
Total ₹11,800
Paid
Made for here
Speaks your language — properly.
Full Hindi, Marathi, Bengali, Tamil, Telugu, Gujarati, Kannada, Malayalam and English — not a half-translated menu with English hiding underneath. Every screen is built in all nine, 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.
One engine · your taste
One app. Your look.
Zahlon GST ships four looks — Ledger Console, Vault, Khata and Pinstripe — each in light or dark. Try three of them right here: pick one and watch this whole page recolour, live. The app remembers the look you choose.
Console opens in graphite and iris · Vault deepens into private-bank navy · Khata turns to warm paper. Same data, three looks — your call.
Your books, in daylight.
Every rupee of money in and money out, logged the moment it happens — with a guided end-of-day close. Open it each morning, settle it each night — and read exactly where the day stands.
Money in ₹ 84,500
Money out ₹ 31,250
Net today ₹ 53,250
Sample figures, for illustration.
From a blank screen to your first sent invoice
No setup wizard to dread, no manual to read. If you can keep a paper bahi-khata, you already know how.
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Set up your shop
Add your business name, GSTIN and logo, pick the look of your invoices, then choose your language — English or any of 8 Indian languages. That is the whole setup.
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Make your first invoice — or record a sale
Build a professional GST 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.
Start free — real GST invoices, a real cashbook, real ledgers, right on your own phone. When you outgrow the free limits, simple paid plans add unlimited records, your own branding, cloud backup and a monthly allowance for the smart assistant.
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Free
For one business on one device, getting started.
₹0 forever
- 10 invoices a month
- 15 active orders · 40 cashbook entries a month
- 2 report exports a month
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Premium
For growing shops that want everything premium.
₹129 / month
₹1,290 / year
- Unlimited invoices, orders and cashbook entries
- The GST portal file, ready to upload
- Your logo and branding on invoices
- Automatic cloud backup
- 25 smart actions a month
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Premium Plus
For Premium users who want a real monthly smart allowance.
₹184 / month
₹1,840 / year
- Everything in Premium
- 50 smart actions a month — Smart Helper questions, bill and statement scans, daily summaries
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Premium Max
For Premium users who want the largest monthly smart allowance.
₹239 / month
₹2,390 / year
- Everything in Premium
- 100 smart actions a month — Smart Helper questions, bill and statement scans, daily summaries
Same prices on Google Play and on the web. On iPhone, the App Store shows its own price.
Pay yearly and get 2 months free
Paid plans from ₹129 / month
Upgrade anytime — secure checkout is built right into the app.
Paid plans are software subscriptions. Upgrade anytime with secure checkout built right into the app. Your records stay on your device by default, a full export is always available, you can start free with no card, and you can cancel anytime.
The honest fine print.
Plain answers on GST, offline use, who owns your data, devices, the free plan and what the smart features actually do.
Does it make proper GST invoices — and help with returns?
Yes. Add your GSTIN and every bill becomes a GST tax invoice: an HSN code on each item, the place of supply, and CGST + SGST or IGST worked out for you. If you are a composition dealer, your bills carry the declaration the rules ask for.
Your GSTR-1 and GSTR-3B figures are built from your own bills and are always free to see, with a CSV for your accountant. Premium also builds the file you upload to the GST portal. Zahlon GST never files anything on your behalf — you and your CA stay in control.
Does it work without internet?
Yes — Zahlon GST is offline-first. You can create invoices, take payments, run the cashbook and update stock with no signal at all.
On a paid plan, once you sign in, automatic cloud backup simply catches up 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. Zahlon GST runs in any modern web browser on a desktop or laptop, and it can be installed as a standalone app. There are also Android and iPhone apps.
Each device keeps its own book. To move your book to another phone or computer, export a backup file and restore it there.
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 2 smart actions a month.
When you are ready for more, Premium removes those limits and adds your logo and branding, automatic cloud backup and the GST portal file. See Pricing for the current prices.
What languages does it support?
The entire app is available in English, हिन्दी (Hindi), मराठी (Marathi), বাংলা (Bengali), தமிழ் (Tamil), తెలుగు (Telugu), ગુજરાતી (Gujarati), ಕನ್ನಡ (Kannada) and മലയാളം (Malayalam) — 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 Zahlon GST a payments app — does it touch my bank or card?
No. Zahlon GST 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.
Open your book today Send a pro invoice
Send a pro invoice
in seconds.
Your GST bills, udhaar, cash and stock in one private book you fully own — online or off, in English and 8 Indian languages.
Works offline No card needed Export your data anytime