No, EvaInvoice is not open-source but the service itself is free.
EvaInvoice has been free and actively maintained for over a year now. The servers are already taken care of whether EvaInvoice exists or not, ensuring continuous accessibility. Personally I’m committed to regularly updating and adding new features whenever I find free time based on suggestions and feedback from users on my Discord server.
Let’s say you have an invoice in PDF format, not created in QuickBooks and you want to automatically extract the data to Excel or JSON. This is what my app does. Can you achieve the same with QuickBooks or Apple?