Oh noes, starting next year, all B2B invoices in Germany need to have an EN 16931 XML-based invoice file (with some minor exceptions, I know). Sadly, my beloved https://getharvest.com will not support it. That app did exactly what I needed, and nothing more, until now.
I just need a simple time tracking and invoicing thing. And I would rather not host it myself.
Any suggestions dear fellow #freelancers?