Show HN: Practice German with AI-tailored exercises

On my path to learning German (still a way to go), I realized that I often spend a lot of time just finding the right exercise for a topic I want to practice, and often there's no easy way to review what I did wrong.

Therefore I made an app where I can tell the AI what I want to practice, and how (e.g. translate, fill the gap, ...) and it generates an exercise for me! Additionally, I get a pretty much limitless amount of available exercises!

Let me know what you think! I'm looking to improve the prompt and overall UX/UI in case (it would also be cool to expand it to multiple languages later).

PS. as it's AI-based, sometimes the AI review is not correct (5% of the time in my tests). Make sure to cross-reference the result if you have doubts!