App idea : typing tutor based on popular media you already enjoy

I am a dev looking for a good app idea, I don't know much about the general consumer but I can share what I would like to use, and i guess use as a starting point for a more general app.<br><br>As a dev myself I regularly use the typing tutor sites, I find them to be very repetitive and boring, I can only use them for a few minutes a day if that. <br><br>So I thought what if I wrote an app that instead of using the same old typing drills, used text from sources you already like and labour over, i.e. favourite books, tv shows or games. As you type these passages the app would score and provide feedback much like the other apps.<br><br>At least for me, I think this would be far more engaging and I could spend more time training and improving my typing skills. <br><br>So my question, would this be something you would use?