featured the Hemingway App Editor as a good tool to help students analyze their own writing. Hemingway is a free tool designed to help you analyze your writing. Hemingway offers a bunch of information about the passage you've written or copied and pasted into the site. Hemingway highlights the parts of your writing that use passive voice, adverbs, and overly complex sentences. All of those factors are accounted for in generating a general readability score for your passage.
This summer the Hemingway Editor was updated to offer a few more features. The Hemingway Editor now provides tools for formatting the text that you write in the web version of Hemingway. You can now create bullet lists, change font size and style, write numbered lists, and indent paragraphs.
Applications for Education
Hemingway is the kind of tool that I like to have students use before exchanging papers with classmates for peer editing. Hemingway acts as a kind of "virtual peer" before the peer editing process. I would also have students use Hemingway before turning in their final drafts for a grade.
StoryToolz offers a tool similar to Hemingway that you may also want to check out.