MMZ Tech POS | Smart, Unified Commerce Platform
Unified Commerce Infrastructure

Optical POS with Precision RX, Built for Opticians.

The only POS system engineered with offline stability and mandatory prescription management features built into its core infrastructure. Experience flawless data integrity.

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RX Data

Full SPH CYL AXIS Tracking

Dedicated prescription database.

Offline

Zero Downtime Sales

SQLite WASM ensures 24/7 reliability.

Sync

Multi-Window Consistency

Real-Time data sync across all registers.

INV####

Auto-Invoicing

Sequential audit-ready invoice numbering.

Gallery View

Unified Commerce Interface in Action

A glimpse into the user experience: The Youtube Demo Video Is not updated but screeshot is updated and you can add anything free custom Options

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Architecture & Stability

Engineered for Reliability: Offline-First

Core Technology & Installation

MMZ POS is an offline-first system. All data resides locally using SQLite eliminating cloud dependencies for daily operations including crucial prescription retrieval.

  • Renderer & Frame: Built with Electron (frameless window) and React + Vite for a native feel.
  • Local Storage: Utilizes sql.js (SQLite WASM) for the main database file (`app.db`).
  • Installation & Updates: NSIS installer (`mmz pos--Setup.exe`) handles setup and auto-updates while ensuring data is always preserved.

Real-Time Sync & Integrity

Guaranteed data consistency across multiple open application windows in real-time. Crucial for multi-register environments in busy practices.

  • Sync Mechanism: Primary sync via BroadcastChannel with meta timestamps polling as a reliable fallback for real-time updates of products vendors and feature flags.
  • Data Integrity: Uses WAL journal mode. Auto-updates updated\_at and dirty flags via DB triggers.
  • Error Handling: Main process crash protection and React renderer error boundaries. Uses defensive `ALTER TABLE` logic for safe schema migrations.

Data File Location: Documents/MMZPOSData/app.db

Tailored for Eyewear Retail

Core Modules & The Prescription Advantage

Customer Data and Details

Centralized management of customer profiles tracking their purchase history and optical journey.

Key Features

  • Unified View: Purchase history RX history and contact details in one screen.
  • Fast Search: Locate records by Name Phone and Customer ID.
  • Optical Journey: Quick access to previous prescription dates and lens type purchases.

POS & Optical Sales Engine

Fast cart operations ability to attach customer RX history at checkout and reliable refund tracking.

Key Features

  • Add by barcode or search. Tracks subtotal discount tax total.
  • Auto invoice numbers (INV#### sequence) for sales reporting.
  • Refunds link via parent\_sale\_id marked clearly in reports.
  • Customer attachment by phone number (auto upsert) at sale time.

Frames Lenses & Stock Control

Track inventory types specific to optical retail (e.g. frames by color/size lens blanks contacts).

Key Features

  • Key fields: SKU name price cost stock category (Frames Lenses Contacts Accessories).
  • Visual indicators for low stock (`<5`) and out-of-stock.
  • Live updates using `products-touch` and broadcast sync.

Vendor & Lab Invoice Tracking

Manage lens suppliers and frame vendors with purchase order tracking and accurate dues management.

Key Features

  • Tracks Opening Balance Credit Limit Purchases Payments and calculated Dues.
  • Detailed vendor invoices (`vendor\_invoices` `vendor\_invoice\_items`).
  • Attach vendor PDFs (stored in `localStorage`) and track banking details.

🔬 The Precision Prescription (RX) System

Go beyond basic data. This system is designed for opticians allowing highly detailed and accurate record-keeping of crucial optical measurements and history.

Optical Measurements

  • Comprehensive fields: SPH CYL AXIS ADD IPD.
  • Full support for Right and Left eye data.
  • Data stored in dedicated `prescriptions` table.
  • Customer contact and normalized phone search.

Lens & Product Types

  • Lens Types: Single Bifocal Progressive (tracked with sales).
  • In-place Merge Logic: Retains missing values when editing customer details (data-safe edits).
  • Lens flag updates only when changed.

History & Data Safety

  • History Preservation: RX history is retained even if the original customer had no prior record.
  • Vendor Dues: Calculates accurately: (Opening Balance + Purchases) - Payments = Due.
Compliance & Financial Visibility

Official Reporting & PDF Export

Sales & Financial Reporting

Generate official print-ready reports directly from local data including refund markings and tax breakdowns.

  • Government Taxing Report: A4 format with invoice tax breakdown and audit-friendly sales data for regulatory submission.
  • Vendor Report: Comprehensive ledger showing Purchases Payments and outstanding Balances.
  • PDF Export: High-quality PDF saving via Electron main process (`printToPDF`).
  • Profit Estimates: Feature toggle to show profit estimates directly on the dashboard.

Customer Experience & Staff Efficiency

Designed to maximize conversion at the counter. Empower your staff with tools that are fast secure and incredibly easy to learn.

  • Instant Checkout: Blazing fast workflows reduce queue times and improve customer satisfaction.
  • Secure Access: Mandatory lock screens ensure only authorized staff process transactions protecting your business data.
  • Zero Training Gap: Intuitive UI allows new employees to start selling immediately with minimal onboarding.
  • Always On: Offline-first reliability means you never lose a sale due to internet connectivity issues.
  • Conversion Focus: Streamlined flows prevent cart abandonment and speed up the payment process.

Quick Start Checklist for Practices

  1. Set Currency (via Developer settings)
  2. Add Products (Frames Lenses Contacts) & Vendor
  3. Record Purchase & Make a Sale
  4. Add/Edit Customer + Precision Prescription
  5. Print Invoice & Generate Reports

Troubleshooting & Backup Strategy

  • Backup Strategy: Manual copy of `Documents/MMZPOSData/app.db` is the primary method.
  • Trouble: If slow → enable Performance Mode.
  • Trouble: Blank reports → ensure at least one vendor exists.
  • Installer: For unsigned installer use “More Info → Run anyway”.
Value at Scale

Select Your Region for the Best Rates

Small Business

Essential features for high-volume single locations.

  • 1 Shop
  • 4 Employee Accounts
  • 1 Admin Account
  • Government Sales Taxing A4 Ready
  • Business Expenses Tracking
  • All Core Features
Select Foundation
Recommended

Pro System

Advanced analytics team management and scaling.

  • Unlimited Registers / 10 Users
  • Full BI & Labor Reports Suite
  • **Full Prescription System (RX)**
  • Multi-site Synchronization
Go Pro

Enterprise

Custom integration and high-volume needs.

Custom
  • Unlimited Everything
  • Dedicated Account Manager & SLA
  • Full Read/Write API Access
  • Custom Payment Rate Negotiation
  • Custom Adding Options
  • And More...
Contact Enterprise Sales