arifemreselvi/artificial-typing-tutor ? reverse-engineered prompt

Build me a simple desktop app called Artificial Tutor that helps me improve English text right away. I want to paste or type text into it, then quickly switch the case to uppercase, lowercase, or sentence start, clean up punctuation, fix common grammar mistakes and typos, and choose a tone like Neutral, Formal, or Casual.

It should feel like a clean writing assistant, with live editing so I can see changes as I type, and it should highlight what was changed so I can easily spot corrections. Keep the interface simple and focused on writing help, not a lot of extra stuff. Make it work as a normal Python desktop app, and if possible include a way to build a Windows exe too. If you need to check current docs for any library details, go ahead and look them up online.