CoPassenger GST360
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CoPassenger GST360
From Invoice to Insights — 360° Covered
🇮🇳 Made for Indian Businesses · GST Ready · 100% Free

CoPassenger GST360

From Invoice to Insights — 360° Covered

Har Dukaan ka Smart Billing Partner

📊 Open Billing App → ⬇️ Download Android APK
100%
Free Forever
GST
Compliant Invoices
Offline
Works Without Internet
3-in-1
Web · Android · Desktop
Everything You Need

360° Business Coverage

From your first invoice to full business insights — all in one app

🧾
GST Invoices & Proforma
GST-compliant invoices, proforma, delivery challans, quotations. Auto CGST/SGST/IGST. Print-ready PDF.
📦
Purchase & Inventory
Track purchases from suppliers. Auto stock update on sale/purchase. Low stock alerts. Barcode scanning.
📊
Dashboard & Reports
Sales vs purchases chart, top buyers, profit margin, overdue invoices, GST summary — all at a glance.
📱
Barcode Scanner
Scan product barcodes with phone camera or USB scanner. Auto-fill item details in invoice instantly.
🖨️
Bluetooth Thermal Printer
Print invoices to ESC/POS Bluetooth printers (Xprinter, Rongta, Epson TM). No cables on Android.
✈️
Courier & Dispatch
Track courier, transporter, air freight, cargo. AWB tracking, e-way bill fields, dispatch dates.
👥
Party Management
Customers & suppliers with GSTIN, credit limits, ledger, outstanding balance. Auto-fill from saved parties.
💰
Payments & Expenses
Record payment-in/out, expenses, other income. Bank accounts with UPI QR code on invoices.
🔒
PIN Lock & Security
4-digit PIN lock. Biometric unlock on Android. Your data stays on your device — we never see it.
Available On

Use Anywhere, Anytime

One app, three platforms — your data syncs across all

🌐
Web App
Open in any browser. No install needed. Works on mobile, tablet, laptop.
thecopassenger.com/app/billing
📱
Android App
Native Android app with barcode scanner, Bluetooth printer & biometric lock.
Download APK Free
💻
Desktop App
Windows desktop app. USB scanner support. Works fully offline.
Coming Soon
🔒

Your Data. Your Device. Your Control.

In Mode 1 — Local File, CoPassenger GST360 operates entirely on your device. Your billing data is saved as an encrypted file on your computer or phone. Our servers serve only the application code — identical to downloading any software. We receive no billing data, no customer information, no invoice details, and no financial records.

This is not a promise — it is how the system is built.

📁
Saved on your PC/Phone
As a .gst360 encrypted file
🔐
AES-256-GCM Encrypted
Only your PIN can open it
🚫
Zero data to our servers
Verify in DevTools Network tab
📶
Works fully offline
No internet needed in Mode 1
Verify it yourself: Open DevTools (F12) → Network tab → Save an invoice in Mode 1. You will see zero requests to our server. The file is written directly to your device.
Simple Pricing

Start Free, Upgrade When Ready

No hidden charges. No credit card required.

Free Forever
Starter
₹0 / month
  • 20 invoices per month
  • Unlimited parties & items
  • GST invoices & proforma
  • Purchase tracking
  • Barcode scanner
  • Bluetooth printer
  • Works offline
  • Android + Web
Get Started Free →
Pro — Most Popular
Pro
₹99 / month
  • Unlimited invoices
  • Cloud sync (E2E encrypted)
  • Multi-device access
  • Advanced reports
  • Priority support
  • Everything in Free
Upgrade to Pro →
Trusted By

What Business Owners Say

Real feedback from real users across India

★★★★★
"Finally a billing app that works offline! I run a hardware shop in a low-network area. GST360 saves me hours every day."
Ramesh Patel
Hardware Store, Ahmedabad
★★★★★
"Bluetooth printer support is a game changer. I print receipts directly from my phone. No laptop needed at my shop."
Sunita Sharma
Garment Shop, Surat
★★★★★
"Barcode scanner + auto stock update is exactly what I needed. Much better than Vyapar for my electronics shop."
Arjun Nair
Electronics Distributor, Bengaluru

Start Billing Smarter Today

Free forever. No signup required to try. Works on your phone right now.

📊 Open Web App → ⬇️ Download Android APK