Your business,
kept like real billing software.
Zen Biz replaces the paper account book — track what you sell, who you sell it to, and every invoice you raise. Private to your account, from day one.
No card required. Works on laptop, tablet, and phone.
Rice 5 kg
₹320
Sugar 1 kg
₹45
Tea 250 g
₹95
Cola 600 ml
₹40
Biscuits
₹30
Oil 1 L
₹140
Current bill
Rice 5 kg
× 1
₹320
Sugar 1 kg
× 2
₹90
Tea 250 g
× 1
₹95
Point at a barcode
Most small businesses run on three notebooks —
one for stock, one for customers, one for bills.
Zen Biz puts all three in one place you can reach from your counter, your phone, or your desk — and keeps it exactly as private as a locked drawer.
Everything your billing needs
Simple enough for day one, ready to grow with paid features later.
Products & services
List everything you sell — goods or services, priced however you like. Keep stock counts where they matter, skip them where they don't.
Purchases & suppliers
Record what you buy in and from whom. Stock-tracked items update automatically — buying adds to stock, selling takes it away.
Invoices & quotations
Build an invoice or send a quotation first — either way the total adds up as you go, and downloads as a clean PDF.
Private by design
Every account's data is walled off at the database level. Log in with a different Gmail and it's a fresh account — nothing ever crosses over.
Works on any screen
The same software adapts itself to your laptop, tablet, or phone automatically — no separate app to install to get started.
Built for every business
Pick your business type on setup and Zen Biz adjusts the details that matter — units in grams for jewellery, packages for travel, stock tracking on for a shop, off for services. Type your own if none fit.
Barcode scanning with your phone
Scan product barcodes with your phone camera (or a USB / Bluetooth scanner) and the item lands in the bill instantly. No typing, no wrong prices, a much faster counter.
Auto barcodes and label printing
Every item gets a unique barcode automatically. Print sticker labels in your paper size, single or double column, with a live preview, on any normal or label printer.
Stock you can trust
Update stock in packs (5 packs of 250 g, not 5 grams), see what is low, change prices while you update, and let purchases and sales adjust counts for you.
Works offline, syncs later
No signal at the counter? Keep billing. Everything is saved on the phone and backed up to the cloud automatically when the internet comes back.
GST billing and reports
CGST, SGST and IGST worked out for you, HSN codes on every item, a GST report and Profit & Loss report ready when your accountant asks.
E-way bill and e-invoice help
Add transport details to an invoice and download the file for the government GST portal. Generate the e-way bill or e-invoice free there, then save the number here so it prints on the invoice.
20 document designs
Pick from 10 invoice templates for A4 and A5 and 10 receipt styles for thermal printers. Add your logo, signature, bank details and payment QR.
Quick category buttons
Filter your items by category in Billing and Stock with one tap, for example Drinks, Snacks or Groceries, so the right item is always one touch away.
22 languages
Use Zen Biz in the language your team is comfortable with, including Hindi, Tamil, Telugu, Kannada, Malayalam, Marathi, Bengali, Gujarati and more.
Share and print anywhere
Send invoices by WhatsApp or email as a clean PDF, or print on A4, A5 or 58 / 80 mm thermal receipt printers.
Reports that make sense
See sales, purchases, expenses and profit without a spreadsheet, and pick any date range.
Teams and many businesses
Run more than one business from one login, and give staff their own access with roles, so each person sees only what they should.
Scan with your phone. The bill builds itself.
No barcode machine needed. Your phone camera is the scanner, so every counter can bill in seconds.
1. Add an item, the barcode is made for you
Every item gets its own unique barcode number automatically. Print stickers in your size (single or double column) and stick them on the products.
2. Open Billing and tap Scan barcode
Point your phone camera at the sticker. It reads the code in a moment and keeps the camera open so you can scan item after item. A USB or Bluetooth scanner works too.
3. The item is added to the bill
Each scan adds the item with its price, scanning the same item again adds one more, and the total updates as you go. Then save, share or print the invoice.
Camera scanning is on the Pro plan. Barcode labels, USB and Bluetooth scanners follow the same steps.
About Zen Biz
Zen Biz is billing and stock software made for the people who actually run small businesses: shop owners, traders, wholesalers, service providers and growing teams. It replaces the account book, the stock register and the invoice pad with one calm, private place.
It is built to be quick at a busy counter: scan an item, take the payment, print or share the bill. It keeps working when the internet does not, speaks your language, and lets you move from the free plan to GST billing, e-way bills and reports only when your business needs them.
Made for small business
Simple screens, big buttons, nothing you do not need on day one.
Private by design
Your data is walled off at the database level and never mixes with anyone else's.
Fast at the counter
Barcode scanning, category buttons and quick print for thermal receipt printers.
Works everywhere
Laptop, tablet, phone and Android app, online or offline, in 22 languages.
Start free. Upgrade when you need to.
No trial countdown, no surprise charges.
Basic
$0
Freelancers & small shops
- ✓Up to 75 products & services
- ✓Up to 75 customers
- ✓50 invoices per month
- ✓Invoices (watermarked)
- ✓Quotations, convert to invoice
- ✓A4 / A5 / Thermal sizes
- ✓1 business, 1 user
Pro
$9/mo
Everything, for growing businesses
- ✓Everything in Basic, no watermark
- ✓Unlimited invoices
- ✓Unlimited customers & products
- ✓Purchases & Suppliers
- ✓Delivery Challan
- ✓Share via WhatsApp / email
- ✓WhatsApp reminders: due, balance, offers, reward points
- ✓Bill PDF sent to the customer on WhatsApp automatically
- ✓Your own WhatsApp message templates
- ✓UPI payment QR that confirms by itself (Razorpay / PhonePe)
- ✓Expense tracking
- ✓Invoice tracking (Sent/Viewed/Overdue)
- ✓Multiple users & roles
- ✓Low stock alerts
- ✓Barcode scanning with phone camera
- ✓E-way bill & e-invoice help
- ✓Colourful styles & 20 document templates
- ✓GST billing & GST report
- ✓Profit & Loss and all reports
- ✓Up to 5 businesses, 10 users
Yearly billing available at ~17% off. Prices shown in INR.
Common questions
Is Zen Biz really free to use?+
Yes. The Basic plan is free forever and includes products, customers, invoices, and quotations — no card required. It's capped at 75 customers, 75 products, and 50 invoices a month; Starter invoices also carry a small Zen Biz watermark. Both the limits and the watermark are removed on the Professional plan and above.
How does barcode scanning work in Zen Biz?+
Every item gets its own unique barcode number automatically. Print the labels, stick them on your products, then open Billing and tap Scan barcode. Your phone camera reads the barcode and adds the item to the bill with its price; scanning it again adds one more. USB and Bluetooth barcode scanners work too. Camera scanning is on the Pro plan.
Can I print barcode labels for my products?+
Yes. Choose your label sticker size, one column or two, and the barcode design in Settings, see a live preview, then print labels from the Stock section. Products sold in packs, like 250 g and 500 g packets of rice, can be counted in packs so labels and stock stay simple.
Does Zen Biz work without internet?+
Yes. The Android app keeps working when the connection drops: you can keep billing and your changes are saved on the phone, then synced to the cloud automatically when the internet is back.
Does Zen Biz support GST invoices, e-way bills and e-invoices?+
Yes. GST billing and the GST report are part of the Pro plan. On Pro you can add e-way bill details to invoices, and Zen Biz prepares the file for the government GST portal so you can generate an e-way bill or an e-invoice (IRN) free of charge, then save the number back on the invoice so it prints.
Can I use Zen Biz for any type of business?+
Yes. Whether you run a travel agency, jewellery shop, retail store, supermarket, restaurant, salon, or any other business, you can pick your business type on setup or type in your own — Zen Biz adapts to what you sell.
Does buying and selling stock update automatically?+
Yes, for products you've marked as stock-tracked. Recording a purchase increases that product's stock; recording an invoice decreases it. Services or packages without a stock count — common for travel businesses — are left untouched. Purchases are available on the Professional plan and above.
Which languages does Zen Biz support?+
Zen Biz is available in 22 languages including English, Hindi, Tamil, Telugu, Kannada, Malayalam, Marathi, Bengali, Gujarati and Punjabi. Change it any time in Settings.
Can I change how my invoices look?+
Yes. Choose A4, A5 or thermal receipt paper, add your logo, signature, bank details and payment QR, and pick from ready-made templates: 10 invoice designs for A4/A5 and 10 receipt designs for thermal printers (Professional and Business plans).
Is my business data private and secure?+
Yes. Every account's data is walled off at the database level using row-level security, not just hidden in the app. If you log in with a different Google account, it opens a completely fresh account — your data never mixes with anyone else's.
Does Zen Biz work on mobile and tablet?+
Yes, on every plan. Zen Biz is a responsive web app that adjusts to your laptop, tablet or phone from the same link, and there is an Android app too, so you can scan barcodes and bill from your phone.
Do I need a credit card to sign up?+
No. You can create a free Zen Biz account with just an email and password or your Google account — no payment details needed to start on the Basic plan.