The wide majority of text editors have the option to count the number of characters a text has, but Char Count goes much further, giving you much more minutely detailed information.
With Char Count you can see how many characters the text has, but also it will tell you how many of those are alphabetic characters, how many are consonants, verbs, how many numbers, the total number of lines the document has, etc.
You can also see the actual cursor position within the document. Char Count is totally free.