Depends. They have six cases, which is standard for a lot of indogermanic languages, and their declension is mostly consistent. I never learned German as L2, but I imagine the fact that in German cases are not clearly marked on the noun but by the combination of article and noun and that we use two different but very similar marking systems depending on context as utter nightmarish for L2 learners.

Furthermore it’s the only European language there is. Every other language spoken in Europe descends from the Eurasian steppe. Well, most likely with a pinch of Kaukasian. It’s several millennia overdue that we honour the Euskari!

TrakCare – wow, intersystem offers a bunch of data management software in > 20 countries.

At first glance, TrakCare seems to be targeted at hospitals. GNUmed is targeted at small practices.

Billing the public health insurance. It’s perfectly usable for private practice, but there are only very few private only practices in Germany.

Main problem with it is lack of certification, which prevents it’s use ironically in Germany, the country of origin. I would have loved to use it. If you live in a less–regulated health system, I wish you success!

Data migration will be a huge problem – medical management system companies tend to lock their customers into their system by preventing data migration.

I just didn’t bother with migration. I used an autohotkey script to print all patient charts of the old system into pdf files – unconvenient but failsave – and built the new data base from scratch.

There are more than I ever wanted to know:

https://en.m.wikipedia.org/wiki/Comparison_of_audio_player_software

https://www.gnumed.de/documentation/