Case study · Flutter POS

Mindset Media — Food Billing & Kitchen POS

Cross-platform billing for food outlets: menu, cart, Bluetooth thermal receipt + KOT, Firebase Auth & Firestore realtime sync. Owner dashboard & shop controls; staff billing & prints — delete orders owner-only.

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At a glance

  • Platform Android · Material 3 · release APK
  • Backend Firebase Auth · Cloud Firestore
  • Role Solo dev · full-stack mobile
  • Source Private repo — demo on request
Mindset Media — food billing POS collage: four key mobile screens (menu, billing, Firebase flows)
Four phone screens in one row — same width as the article column for a consistent banner (no extra frame).

Material 3

Flutter UI

Realtime

Firestore listeners

ESC/POS

Bluetooth thermal

RBAC

Owner vs staff

Project overview

End-to-end food billing & kitchen POS for outlets that need fast checkout, dependable printers and cloud-backed data. Built with Flutter + Firebase so menus, orders and shop settings stay in sync across devices.

Looking for a Flutter POS developer in Varanasi, Firebase billing app, or thermal printer integration? This project shows production patterns: realtime data, strict roles and flows like modify / soft-cancel without breaking sales reporting.

What we shipped

Highlights

Billing & KOT flow

Menu → cart → thermal bill; optional kitchen ticket (KOT); persist orders to Firestore; KOT-only print from cart when needed.

Roles & streams

First signup = owner; then staff accounts. Staff see their orders via stream; Orders tab works for staff workflows too.

Order lifecycle

Modify items/qty; cancel as soft state (exclude from sales); hard delete owner-only; cancelled orders visibly separated in UI.

Cloud shop settings

Shop name, tagline, receipt QR flag in meta/app — realtime sync on every device; QR toggle writes to cloud immediately.

Thermal printing

Customer receipt, KOT reprint, print from saved orders; Bluetooth pairing / connection flows for counters.

Polish & release

Display name Mindset Media, launcher/login copy; layout fixes (Expanded bottom sheet, menu footer Row). flutter build apk release; iOS/web branding tuned.

Owner vs staff

Owner

Dashboard, staff management, shop settings, full order visibility, soft cancel / modify, and only owner can permanently delete orders.

Staff

Menu & cart, billing and prints, Orders tab for day-to-day sales; streams scoped to their orders — no destructive deletes.

Tech stack

Flutter Material 3 Firebase Auth Cloud Firestore Bluetooth ESC/POS print_bluetooth_thermal Android APK

App & data

  • Flutter UI with Material 3
  • Firebase Authentication — owner / staff
  • Firestore: menu, orders, shop meta + realtime listeners

Hardware & rules

  • Thermal printers over Bluetooth (ESC/POS)
  • Production Android builds
  • Security-minded behaviour: owner-only delete vs staff ops

In one sentence

I’ve built a Flutter + Firebase food billing app with Bluetooth thermal printing, role-based owner and staff flows, Firestore-backed menu and orders, and cloud shop settings with realtime sync — including production-style features like order cancel/modify and secure delete rules.

Frequently asked questions

Menu and cart, thermal customer billing, optional kitchen tickets (KOT), Firestore persistence and realtime updates across signed-in devices, plus Bluetooth printer workflows suited to busy food counters.

Owners manage dashboard-level controls, staff and shop configuration. Staff focus on selling and printing, with streams scoped to their orders. Permanent order deletion is restricted to owners; cancellation can remain reversible for reporting.

Yes — customer receipts, KOT prints and reprints, including from saved orders and cart-only KOT scenarios, using ESC/POS style output over Bluetooth.

Developed end-to-end by Web Developer Kashi (Varanasi) as a portfolio-grade Flutter + Firebase POS implementation for food businesses across India.

Related services

Mobile app development

Flutter Android & iOS — POS, Firebase backends, device integrations.

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Custom software

Billing dashboards, inventory hooks, APIs & admin panels.

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