THE SMARTER RETAIL POS

Sell faster.
Know your profit.

Scan products, manage sales, and track your net profit in real time. KaissIO keeps your checkout moving—even when your internet connection doesn’t.

100% Offline SQLite
Native ZBar Barcode
Live Profit Per Ticket
Offline-Ready (SQLite Locked)
ESC/POS 58mm: Paired
Current Ticket Cart Tap items to add
Net Profit on this Ticket Calculated from Purchase Cost (COGS)
+$12.00 (46.1%)
Subtotal $26.00
Total Due $26.00

Built for the speed of a real counter.

Every tool you need to speed up checkout, protect your cash, and understand your real daily profits.

Native Camera & ZBar Scanner

Decoded directly on-device with zero shutter lag. Continuous camera scan mode, supports EAN-13, EAN-8, UPC-A, Code 128, QR, plus handheld Bluetooth & USB laser guns.

Continuous Camera Scan External Bluetooth Laser EAN-13 / QR / UPC

Live Margin & Net Profit Per Ticket

Know your exact profit before you hit tender. Real-time cost price (COGS), selling price, gross markup percentage, and net revenue calculated on every single transaction.

COGS vs Retail Markup % Live Ticket Profit Lock

Digital Customer Debt Book (Crédit)

Replace messy paper notebooks. Assign tickets to customer debt tabs in 1 tap, log partial payments, and see total store receivables with instant statements.

Carnet de Dette Partial Payments Balance Ledger

Wholesale Master Packs & Units

Effortlessly sell by single piece, 6-pack, or master carton. Stock automatically counts down to the single unit with quantity-tiered discount pricing.

Carton Breakdown Wholesale Tiers Unit Auto-Deduction

100% Offline SQLite Vault

Power outage or cell network drop? The register never freezes. Every sale commits atomically to local SQLite and queues quietly for background cloud synchronization.

Atomic Local Commit Outbox Sync Queue Zero Downtime

Thermal Printing & WhatsApp Receipts

Direct Bluetooth wireless printing to standard 58mm and 80mm ESC/POS thermal ticket printers. Plus 1-click professional PDF receipts sent via WhatsApp.

ESC/POS Bluetooth 58mm & 80mm Rolls WhatsApp PDF Sharing

Three steps from barcode to net profit.

Designed for minimal taps and instant cashier onboarding.

01

Instant Barcode Scan

Aim your smartphone camera or pull the trigger on a Bluetooth scanner. Items, stock counts, and prices resolve in under 100 milliseconds.

02

Live Cart & Margin Audit

Adjust units (piece vs carton). The checkout banner instantly shows total cost, retail price, and exact net profit before you collect payment.

03

Tender, Print or Record Debt

Complete the sale with cash, card, or log it to the customer’s debt tab. Print a 58mm thermal receipt or send a WhatsApp PDF with one tap.

OFFLINE ARCHITECTURE

No internet? Your register never stops.

Cell coverage in retail markets and street shops is notoriously unreliable. KaissIO was built offline-first from day one: SQLite guarantees full ACID transactions locally, with an automated outbox queue that syncs quietly when connectivity returns.

100% Offline Durability
AES-256 Encrypted Backups
3 Roles Owner / Manager / Cashier
58 / 80mm Bluetooth ESC/POS Support
SQLite Atomic Engine
✓ Local WAL Mode Persistence
✓ Idempotent Outbox Queue
✓ Zero Cloud Latency in Checkout
✓ Background Sync on Reconnection
✓ Automatic Conflict Resolution

Works with the equipment you already own.

No expensive proprietary POS hardware required.

ESC/POS Thermal Printers

Native driver support for 58mm & 80mm Bluetooth, Wi-Fi, and USB thermal receipt printers.

Barcode Scanners

Use your Android phone camera, any Bluetooth HID barcode laser gun, or desktop USB scanners.

Digital WhatsApp Sharing

Generate clean, branded PDF ticket receipts and share them instantly with customers via WhatsApp.

Cash Drawers & Trays

Trigger standard RJ11 cash drawers automatically through connected thermal printer pulses.

Simple plans. Zero cuts of your sales.

Choose the tier that matches your store volume. Upgrade or downgrade anytime.

Starter (Free)

Essential POS tools for single-counter stores and solo merchants.

$ 0 free forever
  • 1 Retail Store Location
  • 1 Active Cashier User
  • Full Offline SQLite Core
  • ZBar Camera Barcode Scanning
  • Digital Customer Debt Book
  • Bluetooth Thermal Printing (58/80mm)
Get Started Free

Enterprise

High-volume retail chains, franchises, and multi-branch networks.

$ 49 per month
  • Unlimited Stores & Cashiers
  • Role Permissions & Supervisor Overrides
  • Custom ERP & Inventory API Webhooks
  • Automated Nightly Offsite Snapshots
  • Dedicated VIP Support & SLA
Contact Enterprise Team

Frequently Asked Questions

Everything you need to know about KaissIO’s offline durability, hardware, and pricing.

Yes, 100%. KaissIO is engineered from the ground up as an offline-first system. Every sale, barcode scan, inventory adjustment, and debt entry is written atomically to an encrypted local SQLite database on your Android device. When your Wi-Fi or 4G returns, the app quietly synchronizes pending records in the background.

When ringing up a customer who pays on credit, simply tap "Add to Debt Tab" instead of Cash. You select or create the customer record, and the total is added to their ledger. When they come back to settle or make a partial payment, you log the cash deposit and KaissIO updates their balance and prints a receipt.

You can use your phone’s built-in camera with our native ZBar engine, or pair any standard Bluetooth wireless barcode gun or USB desktop scanner. For receipt printing, KaissIO supports all standard 58mm and 80mm ESC/POS thermal printers via Bluetooth or USB.

For every product you stock, you record both the purchase cost (COGS) and your retail selling price. As items are scanned into the cart, KaissIO automatically computes your gross profit margin percentage and net revenue before you complete the sale.

Yes. With the Pro plan, you can switch between up to 3 store profiles. You can assign staff as Store Owners, Managers, or Cashiers, and protect discounts, refunds, and cash drawer reconciliations with supervisor PIN codes.

Yes. In strict compliance with Google Play standards, you can delete your account and personal credentials directly in the app Settings, or submit a request on our public web portal at /delete-account without needing the app installed.

Download KaissIO on Google Play today.

Take control of your inventory, speed up your queues, and know your exact net profit on every single transaction.

GET IT ON Google Play

Questions? Reach our team at support@kaissio.com