Cool Air Craft - Offline Invoicing App

Overview

Cool Air Craft is a local-first invoice and quotation app for air-conditioning service businesses. It focuses on extremely fast data entry and instant, professional PDF output — with no cloud dependency at all.

Key Features

• High-speed entry loop — auto-focused search, keyboard navigation and quick quantity entry
• Live PDF preview — split-screen on web/tablet, fullscreen sheet on mobile
• Offline-only data — invoices and line items are stored on the device, with no sync or network logic
• Adaptive layout — stacked flow under 600dp, split view above

Tech Stack

• Flutter (Android & Web) with BLoC/Cubit
• Drift / Isar local database
• pdf & printing for document generation, run in an isolate to keep the UI at 60fps