One issue with tools like these is that it's pretty artificial. You rarely need to type nonsense series of lowercase only words without punctuation at a consistent character speed.
I did a similar little tool at some point where I just used some books from the gutenberg project and normalised it a bit so there were no weird typographic quotes etc.
It both forces me to become good at the punctuation, and it's more interesting as I will accidentally start reading that book.
I couldn’t agree more on this honestly.
https://www.typequicker.com kinda focuses on this sentiment. AI generated natural text that targets user weak points.
The more you type, the better the targeted exercises are.
The whole app essentially focuses on natural text (except for drills)
I like this one https://typeonline.uk/speed-test/word
I self taught touch typing by copying chapters of It. Eyes focused on the book, keyboard hidden under the desk, and only looking at the screen at each paragraph end. Worked great.
More characters soon, thanks for the suggestion!
i liked one that let you type codebases, great way to learn syntax alongside typing
someone else shared on other comment typing.io pretty sure it was this
I was thinking of using typing drills as hidden spaced repetition for books just yesterday. Not for learning a topic per se but for a kind of memory rehab. I wish there was some kind of slow audio speech mode to spell each sentence once, so that you can avoid memorizing your finger position while doing exercises.