POS App Source Code | Offline POS, Invoice Printing, Live Inventory & GPS TrackingMobile Apps

Designed with an offline-first architecture, ALZERP POS ensures that your sales operations never stop. Whether your team is in a warehouse, on a delivery route, or visiting remote clients, they can continue working seamlessly — with all data syncing automatically once connectivity is restored.

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Built for Field Sales, Van Sales & Distribution Teams

ALZERP POS is engineered specifically for van sales and traveling sales representatives who need speed, accuracy, and reliability in the field.

What They Can Do On the Go:

• Create sales invoices instantly at customer locations

• Generate and print ZATCA Phase 2 compliant e-invoices (Fatoora)

• Check customer balances and outstanding dues before closing deals

• View real-time inventory available in their vehicle stock

• Accept payments and update records instantly

• Operate 100% offline, with zero dependency on internet

This transforms every salesperson into a mobile billing and collection unit, fully connected to your ERP backbone.

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ZATCA-Compliant Mobile Invoicing (Fatoora Anywhere)

Saudi compliance is critical — and ALZERP POS ensures your field operations meet ZATCA Phase 2 requirements.

Sales officers can:

• Generate VAT-compliant invoices with QR codes

• Print invoices instantly using Bluetooth thermal printers

• Share digital invoices via WhatsApp or email

• Maintain proper audit trails synced with the ERP system

This means no more manual invoice corrections, no compliance risks, and no delays in documentation — even outside the office.

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Offline-First Technology That Never Stops Sales

Unlike cloud-only apps that fail when the network drops, ALZERP POS is built on a local database (SQLite with Drift ORM) where all transactions are stored instantly on the device.

• Every sale is saved locally first

• Inventory updates happen in real-time

• Background sync uploads data automatically

• Sales teams experience zero downtime in the field

This architecture ensures operational continuity — a critical advantage for distribution businesses in Saudi Arabia.

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Real-Time Vehicle Inventory & Customer Intelligence

For field sales, knowing what you can sell — and to whom — is everything.

ALZERP POS gives your team:

• Live vehicle stock visibility (no overselling or stock confusion)

• Customer account insights (dues, history, credit limits)

• Smart product search and barcode scanning

• Instant access to pricing, discounts, and promotions

This leads to faster decision-making, better upselling, and more confident sales interactions.

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GPS-Based Sales Team Tracking & Route Visibility

For business owners and operations managers, visibility into field activity is crucial.

ALZERP POS includes location tracking capabilities, allowing administrators to:

• Monitor sales team movement and travel routes

• Verify customer visit locations

• Improve route planning and territory management

• Ensure accountability and productivity in field operations

This bridges the gap between head office control and field execution, giving you full operational transparency.

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Designed for All-in-One Mobile POS Devices

ALZERP POS works perfectly with Android-based all-in-one POS devices, making it ideal for van sales environments.

• Built-in printer support for instant receipts

• Barcode scanning via camera or device scanner

• Bluetooth thermal printing compatibility

• Optimized UI for fast field usage

Your sales team carries a complete billing system in their hands — no laptop, no paperwork, no delays.

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Fully Integrated with ALZERP ERP System

ALZERP POS is not a standalone tool — it is tightly integrated into the ALZERP ERP ecosystem.

• Sales data syncs directly with accounting (Money)

• Inventory updates reflect in central warehouses (Material)

• Sales team performance links with HR and commissions (Manpower)

This ensures that your entire business operates under the 3M Concept: Money, Material, Manpower — fully connected in real time.

⚠️ Important: Prerequisites Before Purchase

This product requires the following two systems to already be installed and operational:

✅ ALZERP Core ERP System — The main multi-branch wholesale distribution and retail management ERP platform (To be purchased separately)

✅ ALZERP Core API Project — The backend API layer that connects ALZERP POS to the ERP (Included in Download Package)

ALZERP POS is a client-side mobile extension of the ALZERP ecosystem. It is not a standalone application. Without the core ERP system and its API running on your server, this application cannot sync data, retrieve customer records, update inventory, or push invoices to the central system.

If you do not yet have the ALZERP Core ERP installed, please purchase and set up before returning to this app. Our support team at $19/hour can assist with the complete stack setup if needed.

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Why Buy the Source Code?

This is not a SaaS subscription. This is not a monthly app rental. This is the actual Flutter source code — every screen, every module, every line of business logic — delivered to you as a complete, ownable software asset.

Here is what that means in practice:

You pay once and own it permanently. No monthly fee. No annual renewal. No vendor deciding to raise prices next quarter. One purchase, permanent ownership.

You customize without asking anyone’s permission. Need to add a new field to the invoice? Change the route tracking logic? Add a module specific to your business? Your developers open the code and make the change. No support ticket. No waiting for a product update.

You deploy for your own team or for clients. If you are a software development agency, one purchase gives you a fully-built, production-ready Flutter field sales application to deploy for distribution clients across any market. The economics of that are extraordinary.

You host everything on your own infrastructure. The app communicates exclusively with the ALZERP API you control, on servers you own, in any country you choose. Your field data, customer records, and invoice history never touch a third-party server.

You white-label and rebrand it completely. Rename it. Redesign it. Make it yours. The source code is yours to modify in any direction.

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Why ALZERP POS is a Game-Changer

For CEOs and Operations Managers:

• Eliminate delays in invoicing and collections

• Ensure VAT & Tax compliance in field operations

• Gain visibility into sales team activity

• Improve cash flow with real-time billing

For IT Teams and Developers:

• Built with Flutter (cross-platform Android & iOS)

• Offline-first architecture with Drift ORM (SQLite)

• Easy API-based integration with ERP backend

• Fully customizable and extensible source code

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The Result: Faster Sales, Better Control, Zero Downtime

ALZERP POS empowers your field sales team to:

• Sell faster

• Invoice accurately

• Stay compliant

• Work without interruption

• Sync seamlessly with your ERP

It turns your distribution operation into a real-time, mobile-driven sales engine — built specifically for the Saudi market.

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Feature Deep-Dive: What the App Does in the Field

Offline Invoice Creation — Zero Downtime, Zero Dependency on Signal

ALZERP POS stores all data locally on the device first using a Drift ORM + SQLite offline layer. Sales officers create complete invoices — product selection, quantity, pricing, discount, and VAT — with no internet connection required. Data syncs automatically to the ALZERP ERP the moment connectivity is available. No invoices are lost. No gaps in records. Your field sales operation never stops because of a dropped signal.

ZATCA Phase-2 Fatoora — Compliant Tax Invoices Printed on the Spot

The app generates fully ZATCA Phase-2 compliant tax invoices with all required fields, VAT calculation, and QR code data handled automatically. Using a Bluetooth-connected all-in-one mobile POS device, the sales officer prints a compliant Fatoora for the customer before leaving the premises. No follow-up invoices. No compliance gaps. Full e-invoicing compliance from the field.

Customer Balance & Transaction History — Know Before Every Visit

Before or during any customer visit, the sales officer can pull up that customer’s complete outstanding balance, payment history, and previous invoices directly on the mobile device — available offline. Outstanding balances are collected on the spot and recorded in the system immediately. Your field team becomes an active accounts receivable force, not just an order-taking operation.

Van Inventory Management — Real Stock, Real Decisions

Van stock levels are tracked within the app and updated in real time with every sale. Before committing to a customer order, the sales officer can verify exactly what is available in the vehicle. When the van is restocked at the warehouse, inventory is updated in the system. No over-promising. No short deliveries. No customer relationship damage from stock errors that could have been avoided.

GPS Location Tracking — Full Field Visibility for Management

A background location tracking module captures each sales officer’s movements throughout the working day without any manual action required. Route logs are synced to the ALZERP ERP backend, where administrators and managers can review officer movements, verify customer visits, analyze route efficiency, and build data-driven territory management. Accountability and operational visibility — automatically.

Multi-Format Invoice Output — Right Document, Right Situation

Invoices are generated in A4 PDF format, 80mm receipt format, and thermal print format. They can be printed immediately via Bluetooth thermal printer, shared via WhatsApp or email from the app, or saved as a PDF. Every customer gets the format they need, delivered at the moment of sale.

Barcode Scanning — Fast, Accurate Product Entry

Camera-based barcode scanning via the mobile_scanner package allows sales officers to add products to an order by scanning rather than searching or typing. Faster order creation. Zero product entry errors. Essential for wholesale/retail orders with large SKU counts.

Seamless ALZERP ERP Sync — One System, No Reconciliation

Every invoice created in the field, every payment collected, every van stock movement, and every customer interaction syncs directly to the ALZERP Core ERP via the ALZERP API. There is no manual reconciliation. No end-of-day upload process. No data gaps between field and office. The field and the ERP are one connected system.

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Technology Stack

Deployment: Android APK, Android App Bundle (Play Store), iOS (requires macOS + Xcode) Flutter SDK: Version 3.x compatible Dart SDK: >=3.0.0 <4.0.0

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Developer Quick-Start (After Purchase)

Step 1 — Install dependencies: flutter pub get

Step 2 — Generate Drift ORM code: dart run build_runner build --delete-conflicting-outputs

Step 3 — Generate localizations: flutter pub run intl_utils:generate

Step 4 — Configure your ALZERP API endpoint: Update the API base URL in “lib/Const/api_config.dart” to point to your live ALZERP Core API server.

Step 5 — Build for production: flutter build apk --release (Android) flutter build appbundle --release (Play Store) flutter build ios --release (iOS — requires macOS + Xcode)

⚠️ Before any production build, remove the SSL debug certificate override in lib/main.dart (MyHttpOverrides).

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Who Should Buy This Source Code

Wholesale distribution businesses that operate van sales routes and want to own and self-host a complete mobile field sales application fully integrated with their ALZERP ERP system.

IT departments and in-house development teams within distribution companies who want the source code to customize, extend, and maintain the app on their own terms — adding modules, adjusting workflows, or integrating with internal systems.

Software development agencies building ERP and field sales solutions for wholesale distribution and retail management clients across the Gulf, MENA, South Asia, or Southeast Asia — use this as a proven, deployable base to launch client projects faster.

ERP entrepreneurs and SaaS founders who already have the ALZERP ERP ecosystem deployed and want to extend their offering with a professional-grade mobile field sales application.

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Optional Expert Support — $19 USD / Hour

The Alwajeez Tech team offers optional hands-on support covering installation, API connection configuration, device setup, customization, and staff training at $19 USD per hour. Available as much or as little as you need — no minimum commitment.

This is the most cost-effective way to get the full ALZERP stack — ERP, API, and POS — live and operational for your team quickly, without navigating the setup process alone.

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Contact Alwajeez Tech

Ready to purchase, have a pre-sale question, or need a live walkthrough of the app before buying?

📧 Email: sales@alwajeeztech.com 📱 Phone / WhatsApp: +966 55 894 7166

🇸🇦 Head Office — Jeddah, Saudi Arabia Al Hayat Commercial Center, Level 2, Suite A216 Building 6945, 2344 Abu Bakr Al Siddiq Street Ash Sharafiyah District, Jeddah 23216

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ALZERP POS Source Code — Developed and maintained by Alwajeez Tech · Built with Flutter · Powered by Drift + Riverpod · Version 26.6.1 · © 2024–2026 Alwajeez Tech. All rights reserved.