Comment by ph4evers
Thanks for the feedback! It is indeed a PoC that I'm hacking together after work.
I've been working hard to get the quality up. And now that I have some paid users for the large languages I can also auto-transcribe high quality channels. Main reason for the poor exercises (especially for German) was that I initially picked some poor channels and I was being cheap.
I've updated the german channel and that should hopefully result in a better experience.