SaaS / B2B Software · POS Flutter Restaurant Build
Hostbooks
Flutter-based Restaurant POS + Kitchen Display System + ERP Cloud Integration + DevOps Observability Platform.
The brief
Extend and stabilize HostBooks' AaharPOS Flutter application to production quality for restaurant clients in India and Dubai, build a companion KDS app from scratch, integrate with food delivery aggregators (UrbanPiper/Zomato/Swiggy), implement loyalty and staff contribution features.
What we built
A comprehensive Flutter restaurant management ecosystem comprising:
- AaharPOS — a production-grade, multi-bill-type POS (Dine-In, Counter, Take Away, Home Delivery, Credit Sale, Online Order) with add-ons, variants, loyalty points, staff contribution, split/merge tables, void/reprint controls, and GST/VAT dual-tax-regime support for India and UAE markets
- KDS App — a standalone Kitchen Display System with 5-state order FSM, real-time WebSocket sync, and SQLite local DB
- Customer Display Screen — a Flutter sub-window using method channels for real-time customer-facing billing display
- UrbanPiper Integration — live Zomato/Swiggy store management with menu publishing and online order sync
- Day-Wise Summary Report — a comprehensive end-of-day reconciliation report with PDF/print
- Neo Online Store — a web-based ordering interface
- ERP Cloud API Migration — systematic replacement of local SQLite ops with 50+ cloud API endpoints across all master and transaction modules
- DevOps Infrastructure — full Terraform/ECS/Grafana/Loki/PRTG observability stack for the HostBooks ERP platform including UAE region migration.
AaharPOS with full billing across 6+ bill types, loyalty points, staff contribution, table swap/merge/split, KDS app with 5-state order tracking, UrbanPiper/Zomato/Swiggy integration, customer display screen, Day-Wise Summary Report with PDF, GST+VAT dual tax regime for India and UAE, Municipal Tax for UAE, and an active cloud API migration covering 50+ endpoints. DevOps: ECS-hosted ERP services in prod and testing with full Grafana/Loki/Prometheus/PRTG monitoring and GitLab CI/CD pipelines.
Delivery timeline
How it was built, phase by phase.
8 workstreams across 51 weeks of operated delivery.
- buildWeek 1–25 (Dec 2024 – Jun 2025)
Kitchen Display System (KDS) App — New Build
A dedicated Flutter application built from scratch for kitchen order display, featuring SQLite local DB, GetX state management, WebSocket real-time sync, order status state machine (5 states).
Standalone KDS app integrated with AaharPOS, delivering real-time kitchen order routing with status transitions and kitchen-specific filtering.
FlutterSQLiteGetXWebSocketsqflite - stabilizeWeek 1–51 (Dec 2024 – Dec 2025)
AaharPOS — Core POS Billing Engine & Bug Resolution
Continuous feature development and bug resolution across the full POS billing lifecycle: invoice creation, add-on/variant handling, box items, discount engine (item-level, bill-level, NC, promo).
Production-grade POS billing engine with comprehensive bill-type coverage (Dine-In, Take Away, Counter, Home Delivery, Credit Sale, Online Order).
FlutterSQLitesqfliteGetX - integrateWeek 3–24 (Jan 2025 – Jun 2025)
UrbanPiper Online Order Integration
Full integration with UrbanPiper aggregator platform: Zomato/Swiggy store active/inactive management, menu publishing with bill-type and price validation, online order acknowledgment.
Live integration enabling restaurant operators to manage Zomato/Swiggy orders directly from AaharPOS with consistent pricing and status sync.
FlutterUrbanPiper APISQLite - buildWeek 4–22 (Jan 2025 – May 2025)
Loyalty Points System
End-to-end loyalty points engine: earn/redeem on POS transactions across all bill types (Dine-In, Counter, Online, Home Delivery), point valuation, exclusion rules for bill types and add-ons, balance tracking.
Fully functional loyalty engine embedded in POS payment flow with customer balance display and redemption controls.
FlutterSQLiteGetX - buildWeek 9–17 (Feb 2025 – Apr 2025)
Staff Contribution (Service Charge) Feature
Configurable staff contribution/service charge feature: settings per bill type, multi-bill-type selection, inclusive/exclusive calculation, integration with hold/recall flows, add-on item interaction.
Production-deployed staff contribution feature with full print support and accounting sync for hospitality billing.
FlutterSQLite - buildWeek 15–22 (Apr 2025 – May 2025)
Day-Wise Summary Report — Full Build
Comprehensive day-close reporting module: Sales Summary (bill-to-bill range, sale/cancel/return counts, NC bills, avg bill), Handling Charges, Channel-Wise Sales, Tax Details (GST/VAT separated).
Fully-featured end-of-day summary report enabling restaurant managers to reconcile daily operations with ERP.
FlutterSQLitePDF generation - buildWeek 16–36 (Apr 2025 – Aug 2025)
Dine-In Advanced Features — Table Management, Swap, Merge, Split
Advanced dine-in table operations: table swap with UI dialog, table merge with pre-merge staff contribution calculation, split bill with duplicate print, empty table with waiting-to-leave status.
Full-featured dine-in management system supporting restaurant floor operations at scale.
FlutterSQLiteWebSocket - buildWeek 21–31 (May 2025 – Jul 2025)
Dubai/UAE VAT & Multi-Tax Regime Support
Comprehensive tax regime separation: GST vs VAT per line item, per-invoice and per-add-on Tax Regime column, print/PDF suppression of CGST/SGST for VAT items, Dubai business creation with TIN number.
AaharPOS expanded to serve UAE market with full VAT compliance alongside existing India GST support.
FlutterSQLite
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