Best Thermal Printer & POS Billing Apps for Small Business, Shops, and Restaurants
Thermal printer app, billing software, POS app — searching for any of these usually means the same underlying need: print a receipt or invoice, fast, without buying a full POS terminal. Here's a straight comparison of Techpuram's thermal printer and billing apps, organized by what you're actually running.
Every small business eventually hits the same question: what's the right app to print receipts, bill customers, or run a counter from a phone instead of an expensive POS terminal? The honest answer depends entirely on what you're running — a retail shop, a restaurant, or a field operation — because a receipt printer app, a billing app, and a restaurant POS app solve overlapping but different problems.
What "Thermal Printer Billing Software" Actually Means
A thermal printer is a compact, ink-free printer that uses heat on special paper — the same technology behind supermarket receipts. "Thermal printer billing software" is simply an app that creates an invoice or receipt and sends it to that printer, usually over Bluetooth or USB, without a driver or a PC in between. The category spans from simple receipt-only apps to full POS systems with inventory, tables, and kitchen tickets — which is why "best thermal printer app" and "best POS billing app" turn up overlapping but different answers depending on what you actually need.
If You Just Need to Print — Simple Bluetooth Printer
If your only requirement is printing — text, images, QR codes, barcodes — without invoicing or inventory attached, a dedicated printer app is lighter and faster than a full billing suite. Simple Bluetooth Printer connects to any 58mm/80mm ESC/POS Bluetooth thermal printer, works fully offline, and adds an AI content generator, 10+ dithering methods for image printing, and deep-link support so other apps can trigger prints directly. Free, available on Android and iOS.
For Heavier Printing Needs — Bluetooth Thermal Printer Plus
If you need USB printer support, OCR (scan a document into editable text), PIN-protected file storage, or a "List Mode" layout builder for mixed text/image print jobs, Bluetooth Thermal Printer Plus covers the professional end of pure printing — still without any billing or invoicing layer attached.
For Visual/Image-Heavy Printing — Thermal Image Printer
Product labels with photos, QR codes combined with images, or hand-drawn notes via a built-in canvas editor — Thermal Image Printer is purpose-built for visual content rather than text receipts, with 7 image formats optimized for 58mm and 80mm printers.
If You Need Invoicing and Billing — Billoo
Once you need actual invoicing — line items, tax and discount calculation, client records, inventory, payment tracking — a printer app alone isn't enough. Billoo is free thermal printer billing software: create the invoice on-screen, then print it straight to a Bluetooth thermal printer with barcode printing, auto-cut, and GST-ready tax calculation built in, or print full-page invoices to a standard A4/Letter printer. No monthly subscription, unlike most billing software in this space that charges a recurring per-device fee.
If You're Running a Restaurant or Cafe — RasaBill
Retail billing and restaurant billing are different jobs. A restaurant needs table assignment, kitchen order tickets (KOT) that go to the kitchen printer without prices, the ability to hold one table's order while taking another, and ideally UPI QR payments at the table. RasaBill is built specifically for that workflow — KOT printing, table management, hold & recall orders, live UPI QR code generation for the exact bill amount, and Bluetooth/USB thermal printing, all working fully offline. Core billing is free; a premium tier adds a customer database and expense ledger.
Choosing Between Them: A Quick Decision Guide
- Just need to print something today, no invoicing → Simple Bluetooth Printer (or Thermal Image Printer for visual content, Bluetooth Thermal Printer Plus for USB/OCR needs). - Retail shop, need invoices, inventory, and receipt printing → Billoo. - Restaurant, cafe, or food stall with tables and a kitchen → RasaBill. - Running both a shop counter and want maximum printer compatibility → Billoo or RasaBill paired with Simple Bluetooth Printer.
Why Free-First Matters Here
Most billing software in this space (POS platforms marketed to retail shops) charges ₹199–₹570 per month per device just to unlock thermal printing and basic billing features. Billoo and RasaBill's core billing, inventory, table management, and thermal printing are free — because the underlying job (create a bill, print it) doesn't need a subscription to work. Premium tiers exist for the features that go beyond day-to-day billing, like RasaBill's customer database and expense ledger.
Getting Started
All five apps are free to download on Google Play (Simple Bluetooth Printer and BabyEye-style camera/vision apps aside, several are also on the App Store for iOS). Pick based on what you're actually running — a shop counter, a restaurant floor, or just a phone that needs to talk to a thermal printer — rather than downloading the biggest all-in-one suite you can find.
Frequently Asked Questions
What is the best thermal printer app for a small retail shop?
If you only need to print receipts, QR codes, or labels, Simple Bluetooth Printer is the lightest option. If you also need invoicing, inventory, and client records, Billoo adds full billing on top of the same thermal printing support.
Is there a free alternative to paid POS billing software?
Yes. Billoo (retail/shop billing) and RasaBill (restaurant billing) both provide free core billing, inventory or table management, and thermal printer support, with no monthly subscription required for day-to-day use — unlike most POS billing platforms that charge per device per month.
What app should I use for a restaurant POS with kitchen order tickets?
RasaBill is built specifically for restaurant workflows — KOT printing to the kitchen, table management, hold & recall orders, and UPI QR payments — rather than general retail billing.
Can I use the same thermal printer across multiple apps?
Yes. Any ESC/POS-compatible 58mm or 80mm Bluetooth thermal printer works across Techpuram's apps — Simple Bluetooth Printer, Billoo, and RasaBill all connect to the same printer hardware.