Auto Invoice Generator

Auto Invoice Generator is a desktop invoicing application that stores all data locally and works fully offline. Unlike web-based invoicing tools, there is no account, no cloud sync, and no server-side storage — invoices, clients, and settings exist only on the user's machine.

Its AI assistant runs open-weights language models (Qwen3, IBM Granite, Qwen3.5) locally through llama.cpp. It can generate a complete invoice from an uploaded document such as a contract, email thread, or work summary — extracting parties, line items, dates, and notes for review — or fill the form through a step-by-step guided interview. AI features work without an internet connection and involve no third-party AI services or per-use costs. The model download is optional; the app functions as a standard invoice tool without it.

Other features include four invoice templates with selectable paper tints, live PDF preview and export, service dates with optional per-day hours, tax handling, custom currencies, and light/dark themes. The installer is code-signed via Microsoft's Trusted Signing program.

A 14-day free trial includes every feature with no sign-up. Licenses are sold as monthly or yearly subscriptions or a one-time lifetime purchase, activated with a key on up to 3 devices. A macOS (Apple Silicon) version is in preparation.