Billkadai: Offline Billing App

Nowhere Origin

About this app

BillKadai is a simple and powerful billing app designed for Indian small businesses.
Create bills in seconds, track sales easily, and manage your shop directly from your phone.

Built for tea shops, restaurants, bakeries, mess, grocery stores, and local retail shops, BillKadai helps replace manual billing with a fast and reliable digital billing system.

Start billing instantly — no complex setup and no internet required.

⚡ Fast & Simple Billing

Generate bills quickly and serve customers faster.

• Create invoices in seconds
• Tap items and generate bills instantly
• Smart favorites for frequently sold items
• Repeat last order with one tap
• Smooth and fast billing experience

Designed for busy shops where speed matters.

📶 Works Completely Offline

BillKadai works even without internet connectivity.

• Generate bills without Wi-Fi or mobile data
• Continue billing during weak network conditions
• Bills are saved instantly on your device
• Optional cloud backup when internet becomes available

Your shop can continue operating without interruptions.

🧾 GST Tax Calculation Support

Easily add GST to your invoices.

• Supports inclusive and exclusive GST tax calculation
• Generate clean and professional invoices
• Preview bills before sharing with customers
• Share invoices via WhatsApp, SMS, or other apps

Helps simplify tax calculations during billing.

💰 UPI QR Payment Support

Allow customers to pay using UPI easily.

• Generate UPI QR code using your shop's UPI ID
• Customers can scan the QR code and pay using any UPI app
• Works with all major UPI apps like PhonePe, Google Pay, Paytm, and others
• Supports Cash and UPI payment recording

BillKadai does not process payments — it simply generates a QR code so customers can pay directly to your UPI ID.

🖨️ Bluetooth Thermal Printer Support

Print professional receipts instantly.

• Connect any Bluetooth thermal printer to your phone
• Print receipts with shop name, items, total, and UPI QR code
• Supports 58mm and 80mm paper sizes
• Works with most affordable thermal printers available in India
• No Wi-Fi or cables needed — connects via Bluetooth

Give customers a clean printed receipt in seconds.

☁️ Cloud Backup & Data Restore

Keep your billing data safe.

• Automatic cloud backup support
• Restore billing data easily on a new phone
• Secure login with OTP verification

Your billing records remain protected and accessible.

📊 Smart Sales Reports

Understand your shop's performance with clear reports.

• Daily, weekly, and monthly sales summaries
• Revenue breakdown by payment method
• Export reports for accounting or record keeping
• End-of-day sales summary

Track your shop's performance with ease.

👥 Staff & Employee Access

Manage your shop staff securely.

• Owner login with OTP verification
• Add staff members with PIN access
• Set permissions for employees
• Protect important business data

Ideal for shops with multiple workers.

🍽️ Easy Menu Management

Create and manage your shop menu quickly.

• Add items with price and category
• Mark fast-selling items as favorites
• Organize menu for faster billing

Set up your billing menu in minutes.

🌐 Multi-Language Support

BillKadai supports multiple Indian languages.

• English
• தமிழ் (Tamil)
• हिन्दी (Hindi)
• తెలుగు (Telugu)
• ಕನ್ನಡ (Kannada)

Designed for shop owners across India.

🏪 Perfect For

BillKadai works well for:

• Tea shops and chai stalls
• Small hotels and restaurants
• Bakeries and sweet shops
• Mess and canteens
• Grocery and retail stores
• Lodges and small businesses

🚀 Why Choose BillKadai?

• Fast and simple billing experience
• Works offline — no internet required
• GST tax calculation support
• UPI QR payment support
• Multi-language interface

Replace your paper billing notebook with a modern digital billing system.

Download BillKadai — the simple billing app for Indian shops.
Start billing in seconds. No setup. No internet. No delays.

What’s new

What's new in this version:
• Search Settings instantly, even with related terms
• New "set up your shop" checklist shows exactly what's missing
• Cash reconciliation no longer double-counts already-verified cash
• Reports and Close Day summaries show Credit separately
• See how much of this month's profit is still uncollected credit
• Fix or delete attendance mistakes
• Smoother switching between tabs