Probably the master of lean writing, this app is similar to some other editing tools, and can be a fun way to check out how often you're using certain things (adverbs, passive voice, etc.) It also tells you how difficult some of your sentences are and what Grade Level it is. It looks like my current novel is mostly at a 5th Grade level according to the app. I think that's a good sign. I don't want to be too verbose!
Hemingway
Hemingway