We built an AI-powered invoicing app for UK trades — here’s the full stack, desktop builds, and live platform

Source: Dev.to

Managing quotes and invoices after a full day on site is still one of the biggest productivity killers for UK self‑employed and small businesses.
We built FactuLingua — an AI‑assisted invoicing and quoting platform that works across web, desktop, and Android. The full system is live and in active use.

Live Platforms

• Main website:
• Web application:
• Desktop installers
  • Windows:
  • Linux (DEB):
• Google Play:

Core Features

• AI‑assisted quote creation
• Fast invoice generation (seconds)
• Automatic numbering
• VAT‑ready workflows for the UK
• Cloud sync across devices
• Secure subscription handling

Tech Stack

Backend

• FastAPI + PostgreSQL

Frontend

• Flutter (Web, Android)

Desktop

• Electron builds for Windows and Linux

Infrastructure

• VPS (Debian) + cloud‑sync architecture

Target Users

• Builders
• Electricians
• Plumbers
• Cleaners
• Mobile services
• Anyone who wants to avoid evening admin work

Getting Started

• Create a free account:
• GitHub repository:
• Desktop downloads (v1.0.2):

Contributing & Feedback

We’re actively improving the platform and shipping new desktop and mobile builds. Feedback from developers and SaaS builders is very welcome. If you’re building a cross‑platform SaaS or working with Flutter + desktop distribution, feel free to reach out to exchange experience.