Munim Book — GST Billing & Invoicing App for Every Indian Business
Simple billing. Built for your business. In your pocket. सरल बिलिंग, तेज़ व्यापार
GST invoices in 30 seconds for taxi operators, jewellers, kirana stores, wholesalers and freelancers. Send on WhatsApp with a UPI QR. Track udhaar. Print on Bluetooth thermal printers.
Built for your trade
Munim Book adapts to your business
Every industry has unique billing needs. Munim Book changes its fields automatically so you only see what matters to your trade.
Taxi & Fleet
Pain point: Handwritten trip slips, disputes over toll & night rates
Solution: Generate a trip slip in 15 seconds inside the cab
Jewellery
Pain point: Gross/net weight errors and complex making charges
Solution: Auto-calculate weight, purity, wastage & making charges
Retail / Kirana
Pain point: Slow counter billing and manual stock management
Solution: Barcode scan, fast counter billing & automatic stock update
Wholesale & Distributors
Pain point: Managing large orders, party ledgers & supplier bills
Solution: Bulk invoicing, party-wise balance sheets & purchase entry
Services & Freelancers
Pain point: Chasing clients for payments, no professional invoices
Solution: Professional service invoices with WhatsApp payment reminders
Your day with Munim Book
From setup to settled payments — in one app
Onboarding in 60 seconds
Download, enter OTP, pick your business type. Your first invoice template is ready.
30-second invoice
Select customer, add items, apply GST — share or print in seconds.
WhatsApp + UPI QR
Send the PDF bill to your customer's WhatsApp. The UPI QR lets them pay on the spot.
Khata & reminders
Track udhaar per party, send WhatsApp payment reminders at the right time.
Daybook & expenses
Review your cash in/out, log expenses, and see your day-end balance at a glance.
Everything you need
Every billing feature, one app
बिल बुक, GST, खाता, रिपोर्ट — सब कुछ Munim Book में।
30-sec Invoicing
Select party + items — bill ready to share in under 30 seconds.
Industry-Adaptive
Fields change automatically based on your business type.
Dynamic UPI QR
Every invoice carries a unique QR linked to your UPI ID.
Parties & Khata
Customer and supplier ledger with running balance tracking.
Offline-First
No internet? No problem. Everything works, syncs when online.
Thermal + A4 Print
Bluetooth 58/80mm thermal and A4/A5 PDF printing.
Automated GST
CGST/SGST/IGST, HSN/SAC codes — all calculated automatically.
Expense Logger
Log daily business expenses and categorise them easily.
Daybook
Daily cash summary — total sales, expenses, and closing balance.
Business Reports
Sales, purchase, party-wise and GST reports at your fingertips.
Template Studio
Add your logo, signature and brand colour to every invoice.
Payment Reminders
Send polite udhaar reminders via WhatsApp in one tap.
WhatsApp Dispatch
Share invoices as PDF instantly on WhatsApp.
Stock Management
Real-time inventory tracking updated on every sale.
Purchase Bill Entry
Record supplier bills and update stock automatically.
Multi-Payment
Cash, UPI, card, cheque — record any payment mode.
Smart Purchase Bill Upload & Bulk Inventory Import
For Retail & Wholesale: upload your supplier bill photo and let Munim Book extract the items. You review and confirm before anything changes — stock updates only after you approve.
Upload Bill Photo
Take a photo or upload an image of your supplier bill.
Extract Data
The system reads item names, quantities and rates from the image.
Review & Edit
Check every line item — correct anything the system may have missed.
Match Inventory
Items are matched against your existing product catalogue.
Confirm Entry
Stock is updated ONLY after you tap Confirm — never automatically.
This feature is in development. Stock changes only after you confirm — never automatically.
Get started
Up and running in 4 steps
Download the app
Search "Munim Book" on Google Play and install.
OTP login
Enter your mobile number and verify with a one-time OTP.
Pick your business type
Select your industry — Taxi, Jewellery, Kirana, Wholesale or Services.
Send your first bill
Add a customer, select products, and share via WhatsApp in 30 seconds.
Why Munim Book?
Munim Book vs paper bill-books vs generic apps
| Feature | Munim Book | Paper Bill Book | Generic App |
|---|---|---|---|
| GST invoice creation | Partial | ||
| Industry-adaptive fields | |||
| WhatsApp dispatch with UPI QR | |||
| Bluetooth thermal printing | |||
| Offline operation | |||
| Parties & udhaar khata | Manual | Partial | |
| Stock management | Partial | ||
| Daybook & expense logger | Partial | ||
| Payment reminders |
Trusted by businesses
What business owners say
[Testimonial placeholder — real customer reviews will be added once collected]
[Testimonial placeholder — real customer reviews will be added once collected]
[Testimonial placeholder — real customer reviews will be added once collected]
Testimonials are placeholder content. Verified reviews will replace these once collected.
Pricing
Free to download on Google Play
[Pricing placeholder — pricing details will be confirmed and published here. Download the app to see current plans.]
Download Free on Google PlayFAQ
Frequently asked questions
Start billing smarter today
GST invoices in 30 seconds. WhatsApp dispatch. UPI QR. Offline-first. Download Munim Book free on Google Play.