Intro is very long and I am very confused about what to push. None of the buttons seem to work.
I can definitely see the progress - nice work! 🙂
One thing you should really pay attention to is the UX. For example, it says “click,” but I actually have to double-click on the frequency, which feels a bit confusing.
Personally, I’d also consider adding a text speed-up system. It doesn’t have to be a full skip - something like holding a button to make the text play 3x faster would feel great. I read fast and I'm not the only one ;)
Also, it would be a good idea to disable text selection with the cursor in the browser - that can get pretty annoying.
But overall, it’s much better than before 💪🙂