The Smart Inventory & POS Software That Never Stops Selling.
Scan barcodes, track stock, print receipts, and manage suppliers—even during power cuts and internet blackouts. Every in-store sale automatically synchronizes with your free online storefront.
Cart Line Items (2)
Register: Lane 01 • Cashier: Active
Wireless Laser Barcode Scanner
SKU-7721 • Barcode: 89010239481
₦24,500
₦24,500 ea
80mm Thermal Receipt Rolls (10 Pack)
SKU-1094 • Barcode: 50123984102
₦12,000
₦6,000 ea
When you ring up this sale, the stock automatically deducts from your online storefront.
Engineering Built For Real Retail Operations
How MartCliq eliminates downtime, stock drift, and manual spreadsheet errors.
Zero-Downtime Local SQLite Engine & Barcode Scanning
When public networks or electricity cut out, traditional cloud POS terminals completely lock up. MartCliq writes every transaction directly to your device's local SQLite database with dedicated offline transaction sequence IDs. Cashiers scan barcodes, accept cash or transfer payments, and print receipts without freezing. When network reconnects, background sync updates the cloud automatically.
• Local Database: SQLite 3.4x
• Offline Queue: FIFO Persistent
• Conflict Rule: Local Register Precedence
• Cloud Reconnect: Auto-Reconcile
Supplier Cost Tracking & Multi-Branch Restocks
Stop tracking restock receipts in dusty paper notebooks. Record purchase orders, track unit cost prices, calculate gross profit margins, and allocate stock across different physical branches or warehouse locations.
- Supplier directory with payment terms and purchase histories
- Low-stock threshold triggers and automatic reorder alerts
- Wholesale tiered pricing and PDF catalog exports
Automatic Online Storefront with Escrow Protection
Every business gets a direct storefront link (`martcliq.com/store/your-shop`). When physical stock sells out at your counter, it disappears online instantly. Enable commission rates so independent sales reps can market your products on WhatsApp with zero upfront ad cost.
- 100% Escrow Protection locks customer payment until delivery inspection
- Performance-tracked referral links for sales marketers
- Direct WhatsApp catalog sharing with automated cart checkout
Tested with 58mm & 80mm ESC/POS thermal printers, USB laser scanners, and cash drawers. Cashiers can ring up sales, but cannot view your wholesale supplier costs or profit margins.
The Smarter Way To Run Your Store
Why Retailers Are Replacing Spreadsheets with MartCliq
| Capability | Excel / Paper Ledgers | Generic Online Store | MartCliq Business OS |
|---|---|---|---|
| Zero-Downtime Offline Checkout | Manual / Tedious | Stops working offline | Full Offline SQLite Engine |
| Native Barcode Scanner & Printer Support | Not supported | Requires expensive third-party plugins | Built-in (USB & Bluetooth ESC/POS) |
| Physical Stock Auto-Syncs Online | Not supported | Separate siloed inventory | Real-time Automated Sync |
| Supplier Directories & Restock History | Cluttered notebooks | Not supported | Full Supplier Cost Directory |
| Monthly POS Software Subscription | Free, but high human error | $29 - $100+/month recurring | $0 Free to Download |
Platform Guarantees
Built for Transparency and Merchant Control
Zero Software Rent
No mandatory monthly subscriptions to keep your offline counter register running. Download and manage your catalog freely.
100% Escrow Protection
All web orders are secured through milestone escrow, protecting store owners from fake payment receipts and chargebacks.
Local Database Ownership
Your inventory and sales data remain stored locally on your device with high-speed SQLite, accessible even during total outages.
Role-Based Staff Privacy
Cashiers can ring up sales and print receipts, but cannot view your wholesale supplier cost prices or profit margins.
Download MartCliq for Your Devices
Install the native app on your counter PC, laptop, or mobile terminal to enable offline inventory and point of sale.
Windows
Most Popular for Shops
.exe Installer (64-bit)
macOS
Apple Silicon & Intel
.dmg Installer
Linux / POS Terminal
Ubuntu, Debian, Mint & Terminals
.deb Package
iOS (iPhone & iPad)
iPhone & iPad POS Terminal
Apple App Store
Android POS & Mobile
Smartphones & POS Handhelds
Google Play Store
Web & Cloud POS
Any Browser & Chromebook
Chrome, Safari, Edge, Firefox
Got Questions?
Frequently Asked Questions for Business Owners
What happens if my shop loses internet or electricity in the middle of a transaction?
MartCliq runs on a local SQLite database directly on your computer or phone. Your cashiers keep scanning barcodes, adding cart items, and printing receipts over USB or Bluetooth. All transactions are assigned offline sequence IDs. As soon as your internet reconnects, background sync uploads all records to the cloud with zero duplicate charges.
What happens if an in-store walk-in customer buys the last item while someone tries to buy it online?
In-store POS counter checkouts decrement your inventory immediately. When online, web storefronts update in sub-second real time. If your physical store happened to be offline during the sale, the local register transaction timestamp takes precedence and immediately marks the online item as 'Sold Out' upon reconnecting.
Which thermal receipt printers and barcode scanners are supported?
MartCliq natively supports standard ESC/POS thermal printers, including 58mm portable Bluetooth printers and 80mm high-speed desktop USB printers (such as Xprinter, Rongta, and Epson). For scanning, any standard USB laser scanner, Bluetooth handheld scanner, or built-in smartphone camera scans 1D/2D and EAN-13 barcodes with zero drivers required.
Can my cashiers see my wholesale supplier costs or profit margins?
No. MartCliq enforces strict role-based access permissions. Cashiers are restricted to the POS checkout register where they scan items, accept cash or transfer payments, and print receipts. Only the business owner and designated store managers can view supplier directories, unit cost prices, profit margins, and wallet balances.
Do I have to pay a recurring monthly subscription fee for the offline POS?
No recurring monthly subscription is required for desktop/mobile inventory tracking, barcode scanning, and offline point-of-sale checkout. MartCliq only charges standard nominal fees on optional marketplace escrow transactions and sales rep commission payouts.
Can I manage inventory across multiple store locations or branch warehouses?
Yes. You can configure multiple physical locations (e.g., Main Showroom, Warehouse, Branch 2) within your inventory dashboard. You can transfer stock between branches, monitor low-stock thresholds per location, and designate which branch handles in-person customer pickups.
Ready to upgrade your store's inventory management?
Join independent businesses running offline POS, real-time stock control, and automated online storefronts.