POS Software — your point of sale without crashes, duplicates, or surprises
Professional point of sale system for retail, supermarkets, pharmacies, hardware stores and multi-store chains. Multi-lane, real-time inventory control, customer loyalty, MoF electronic invoicing, works even when internet goes down, and connects to your ERP and accounting.
A bad POS costs you sales every day: it freezes during peak hours, doesn't know how much stock is left, calculates VAT incorrectly, reports don't match accounting, and when internet drops.. the store becomes chaos.
A good POS does three things well: never goes down (offline mode), talks to your other systems (inventory, accounting, ERP), and gives you real visibility of what sells, where, when and to whom. If your current system fails any of the three, you're losing money every day.
Fast checkout
Charge in less than 5 seconds. Search by code, description or scan. Keyboard shortcuts for experienced cashiers.
Offline mode
Keeps invoicing without internet. Auto-syncs when connection returns. No ticket is lost.
Multi-store
Single centralized platform. Each store operates independently, management sees consolidated view in real time.
Real-time inventory
Each sale instantly deducts stock. Low inventory alerts, replenishment suggestions, transfers between warehouses.
Multiple payment methods
Cash, card, transfer, vouchers, gift cards, customer credit, split payments. Automatic reconciliation at lane closing.
Electronic invoicing
DTE, CCF, FE, FSE for El Salvador MoF. Automatic stamping, contingency handling, NRE for sales without document.
Flexible promotions
Discounts by product, category, total, time of day, VIP customer, second-at-50%, BOGO, combos. Configurable from admin without coding.
Customer loyalty
Points program, card-based discounts, segmentation, birthdays, purchase history. Real data for marketing.
Cash control
Lane open/close with counting, surprise checks, shortage/overage tracking, withdrawals, deposits. Full cash traceability.
Executive reports
Sales by hour, day, week, month. By cashier, product, store. Period-over-period comparisons, trends.
Returns and credit notes
Controlled process with authorization. Stock returns, accounting adjusts, customer receives electronic CN.
Standard hardware
Works with Epson, Star, Bixolon printers. 24V/12V drawers. 1D/2D scanners. Toledo, Mettler scales. No vendor lock-in.
- Supermarkets and convenience stores: high-speed checkout, integrated scales, weighted products, combo offers, frequent shopper program.
- Pharmacies: lot and expiration control, controlled medications, prescription handling, integration with health insurance.
- Hardware stores: products by meter and kilo, kits, warranties, credit sales, customer current accounts.
- Clothing and shoe stores: sizes and colors, multiple stores, transfers, reservations, fittings, returns.
- Bookstores and stationery: high SKU variety, back-to-school season, imports, package promotions.
- Convenience stores and agencies: high turnover, perishable goods, multi-shift.
- Boutiques and specialty stores: personalized service, customer history, exclusive products.
- Distributors with retail point: wholesale + retail simultaneously, differentiated price lists.
- Discovery (1-2 weeks): store visit, interviews with cashiers and management, current process mapping.
- Catalog setup: product migration, prices, taxes, categories. If your catalog is messy, we clean it.
- Infrastructure setup: central server, store connections, redundancy, offline mode.
- Customization: business-specific discount types, custom reports, recurring promotions.
- Cashier training: hands-on sessions with real devices. Quick operation document.
- Management training: reports, configuration, exception management.
- Pilot in 1 store: 2-3 weeks in real production with intensive support.
- Progressive rollout: 1 store every 2-4 weeks until full chain coverage.
- Post go-live support: 4 weeks of intensive support, then monthly maintenance plan.
- ERP / Accounting:Mónica, Excellence, SAP B1, Odoo, custom systems.
- Payment gateways:Wompi, N1co (digital POS), bank terminals, Stripe.
- El Salvador MoF e-invoicing:DTE, CCF, FE, FSE, NRE.
- WhatsApp Business: automatic DTE delivery to customer via WhatsApp.
- E-commerce:Shopify, WooCommerce — real-time inventory sync.
- Loyalty programs: integration with customer mobile apps for points accumulation.
- Hardware:Epson, Star, Bixolon, Citizen, Toledo, Mettler, Honeywell, Zebra.
- Checkout speed: 30-50% faster than legacy systems. More sales during peak hours.
- Shrinkage losses: 20-40% reduction with real inventory visibility.
- Inventory variances at closing: drop from typical 5-8% to 1-2%.
- Lane closing time: from 30-60 minutes to 5-10 minutes.
- Electronic invoicing errors: 0 MoF rejections after first month.
- Report generation time: from hours in Excel to clicks on dashboard.
- Management visibility: real-time sales from your phone, no waiting for end-of-day.
We work with any standard hardware. If you're starting or upgrading, we recommend:
- Lane terminal:All-in-one with 15" touchscreen (Posiflex, NCR, Epson, good Chinese alternatives):
- Thermal receipt printer:Epson TM-T20III or equivalent. USB or Ethernet.
- Barcode scanner: 1D for standard retail, 2D if handling customer DTE. Honeywell, Zebra, Datalogic.
- Cash drawer: 24V with mechanical lock.
- Customer display: optional, improves experience.
- Scale:Toledo Argentum, Mettler Toledo Tiger Pro.
- UPS: essential. APC Back-UPS 750VA minimum.
Total typical per lane: -2,500. We can source it at wholesale prices if needed.
Small store POS
1-2 lanes, configuration, training, MoF electronic invoicing. 2-4 weeks. Hardware separately.
Mid-size multi-store POS
5-15 lanes, 2-5 stores, ERP integration, loyalty, executive reports. 6-10 weeks.
Enterprise / chain POS
20+ lanes, multi-warehouse, advanced integrations, executive dashboards, high availability. 3-6 months.
Monthly maintenance
Support, updates, adjustments, new reports. Critical for systems operating 7 days a week.
What determines the cost of a POS system?
Lane count and number of locations drive it. Then: multi-warehouse support, ERP and accounting integration, loyalty program, executive dashboards and high availability. Hardware — terminal, printer, scanner, cash drawer — is quoted separately by model. We deliver a fixed quote after a scoping session, at no charge.
How long does POS implementation take?
Standard POS for 1-3 lanes: 2-4 weeks. Multi-store with 5-15 lanes: 6-10 weeks. Chain with ERP integration and large catalog migration: 3-6 months. Quick setup is possible if catalogs are clean — that's the usual bottleneck.
Does it work if internet goes down?
Yes. Offline-first mode: the lane keeps invoicing even without connection. When internet returns, it syncs automatically to the central server. No tickets are lost. Essential for real retail where 1 hour without invoicing = lost sales.
Does it comply with El Salvador's electronic invoicing?
Yes. DTE, CCF, FE, FSE, NRE generation on each sale. Automatic MoF stamping. Contingency handling (when MoF is down, invoice in offline mode and sync later). We've certified dozens of retailers in El Salvador.
Does it support my existing devices (printer, drawer, scanners)?
Most likely yes. We support Epson, Star, Bixolon, Citizen printers via USB/Ethernet. Standard 24V/12V drawers. 1D and 2D scanners with USB-HID interface. Connected scales (Toledo, Mettler). If you have specific hardware, we evaluate before committing.
Does it integrate with my accounting and inventory system?
Yes. Each sale generates the right accounting entry in your system (Mónica, Excellence, custom ERP, SAP, Odoo). Real-time inventory deduction. For multi-store sales, transfers between warehouses and replenishment are also integrated.
Is your current POS costing you sales? Talk to us and we'll do a free diagnostic of your current system with improvement proposal in 5-7 business days.
