I think maybe it would be better if the application showed any erroneously typed characters, rather than the correct characters in red. Or, if it's possible, to show some sort of visual juxtaposition between the two.
Also, I think maybe the font size should be a little bit larger, at least for the text around the position where the cursor is, if not for the whole text. Otherwise, nice application!
Hello! As a matter of fact, I just changed the way mistypes are handled to be like this. There will be options for less obtrusive cursors coming soon as well, which I hope should fix the need for larger text.
Also, I think maybe the font size should be a little bit larger, at least for the text around the position where the cursor is, if not for the whole text. Otherwise, nice application!