Editsaurus by Tyler Walters does a great job of finding adverbs and unneeded filler words; such as, ‘that’. Stephen King disparages the use of adverbs and this app would work well for him. Other apps can do the same, but I prefer the highlighting method used by this app. I don’t believe in removing every adverb, so this app lets me sample the sentences. The same can be said about the word, ‘that’; which, can be replaced by a comma in many cases. You may find a use for the other features of the app, but I benefited from this singular feature.