TypeQuicker (https://typequicker.com) - personalized typing app.

I believe anyone can learn to type fast - I think it just takes the right tools to make it interesting enough for the users to use consistently

Great but I wish after I typed a page or paragraph, it tells me what is the main issues in my typing and give me recommendation/practice to type those problematic characters I'm not good at. You may call it typing doctor feature or something like that.