Offline-First Operations
Every device continues performing critical work during connectivity loss. Encrypted local database and persistent sync safely reconcile when connectivity returns.
BUSINESS SOFTWARE / RETAIL
Offline-First Business Operating System
The whole operation. Even when the internet isn’t.
01The challenge
A real problem
worth solving.
A retail business needed an operational system that runs reliably in environments where internet availability cannot be treated as a requirement. The system needed to handle point-of-sale, inventory, customer accounts, supplier operations, checks, payments, returns, reporting, and operational controls, all synchronized across multiple devices.
Our role
Full-stack developer: designed the offline-first architecture, built the Flutter application for Windows and Android, implemented encrypted local database, synchronization layer, POS workflows, inventory management, financial operations, and reporting.
02The solution
The details that
make the difference.
Atomic Financial Operations
Inventory and financial transactions are atomic and retry-safe, preventing duplicated effects during synchronization across devices.
Complete Business Operations
POS, inventory (unit/weight/package), customer accounts, supplier liabilities, checks, returns, cash drawer, and financial reporting in one system.
FEFO Inventory Management
First-Expiry-First-Out inventory consumption with batch tracking, supply management, and expiry date monitoring.
Conflict Handling
Designed for concurrent device usage with conflict resolution ensuring data consistency across the synchronized fleet.
Explore the full delivery scope
- Flutter application running on Windows and Android
- Offline-first architecture with encrypted SQLCipher local database
- Persistent background synchronization queues with Supabase cloud
- Retry-safe and idempotent operations preventing duplicate financial effects
- POS with barcode workflows for unit, weight, and package-based products
- FEFO inventory management with expiry date tracking
- Customer debt and credit ledger management
- Supplier accounts, purchases, and liability tracking
- Incoming and outgoing checks management
- Returns processing with accounting reversals
- Cash drawer management and financial reporting
- WhatsApp customer notifications
- Role-aware responsive interfaces with PIN-based security
- Audit-friendly archiving instead of destructive deletion
03Inside the product
The actual experience.
9 product screens.
Select any image for a closer look.
The thinking behind the build
This is not a CRUD application wrapped around a database. It is operational software designed around failure conditions: connectivity loss, retries, accounting reversals, concurrent devices, incomplete imports, inventory consistency and financial integrity. It demonstrates the ability to engineer software that a business can depend on for its daily operations.
Your business, next