The Invoicing App for Germany & the EU. On Your Desktop.
100% Offline-First. No Cloud. No Subscription.
Native desktop experience on Windows, macOS, and Linux. Work how you want, wherever you are, with a single, consistent interface.
Automatically embed machine-readable data (like ZUGFeRD or XRechnung) into your PDF invoices. Get ready for mandatory EU e-invoicing today.
Forget bloated web apps. As a native Desktop app, Invoicer starts instantly and runs at full speed. No browser tabs, no lag. Focus on your work, not your loading screen.
Why upload your sensitive financial data to a cloud you don't control? Invoicer is built on an 'offline-first' principle. Your clients, your invoices, and your revenue numbers never leave your computer unless you decide to send them. It's the perfect solution for lawyers, consultants, and anyone who takes data privacy seriously.
No subscriptions, no surprise renewals. Buy a lifetime license once and keep using Invoicer as long as you like. Optional paid upgrades only when you decide you need new features.
Invoicer helps you work in a way that supports GoBD-style record keeping: invoices stay on your machine, changes are transparent, and exports are under your control. Your tax advisor gets clean, well-structured data.
Easily input client details, line items, and apply the correct EU VAT or reverse-charge rules. What you see is exactly what your client receives.
We ensure the application looks and functions exactly the same, whether you're on your office PC or a lightweight Linux laptop.
Generate invoices that are ready for digital processing by tax authorities and large corporate clients.
Your standard PDF invoice is automatically bundled with the required XML data file for effortless electronic processing.
Get a head start on the mandatory shift to e-invoicing for B2B transactions, ensuring your business is compliant when the deadlines arrive.
So are we. That's why we do things differently.
We believe software should be a tool you own, not rent forever. Pay once, use it as long as it works for you. No expiration dates. No monthly anxiety. Just honest, transparent pricing.
* Introductory prices may change in the future.
Major version upgrades (e.g., 1.x → 2.0) happen rarely and are completely optional.
* Introductory prices may change in the future.
Available when Invoicer 1.0 launches
We are currently in the final stages of development. The application is powerful and ready for daily use, but as with any new software, there may be some small bugs or rough edges.
Your Feedback is Invaluable: In exchange for using the application for free and providing us with bug reports and feature ideas, you get a powerful, compliant invoicing solution at zero cost. This limited-time offer will not last.
Submit valuable feedback or bug reports and get a free license when Invoicer 1.0 launches. Help us build the software you need.
⚠️ IMPORTANT: This is a Preview Release. Please report any bugs immediately. AGYNAMIX makes no guarantee of data integrity or compliance during the free preview period. Please back up your data regularly.
Since the application doesn't yet have a code-signing certificate, Windows SmartScreen will show a warning. This is normal for new applications. Here's how to proceed:
Step 1: Click 'Keep'
Step 2: Click 'More info'
Step 3: Click 'Run anyway'
Since the application doesn't yet have an Apple Developer certificate, macOS Gatekeeper will block it. This is normal for new applications. Here's how to open it:
Go to System Settings → Privacy & Security and click 'Open Anyway'
chmod +x agynamix-invoicer-*.AppImageAppImage files need to be made executable before you can run them. You can do this via the command line or through your file manager:
Right-click the AppImage file, select Properties, and check 'Allow executing file as program'
Optional: For better system integration, you can use AppImageLauncher (3rd party application, use at your own risk). It allows you to integrate AppImage applications into your system menu and handle updates.
Found a bug? Got a great idea? Submit Feedback Here