Sorry, but most of this is built into the Cocoa frameworks already, and what isn't can be implemented very easily with 'search and replace' functions in the frameworks.
For example, capitalising text (one of the features touted) is a single method call:
And you can do upper and lower case in the same way.
One line of code.
So I don't see any reason to pay $90 to clean up text when OS X will already do that for me without further outlays.