Hemingway started off as a web-based a text editor that offers corrections on your writing as you type. The app focuses on basic grammar, such as adverb use, passive voice, long sentences and more.
Hemingway recently transitioned its app to the desktop, offering versions for the Mac and Windows that allow you to bring your writing and editing offline. Unlike the web version, the desktop version offers support for saving and opening files, allowing you to use Hemingway as both your writing app as well as your editor.
Hemingway has a distraction-free writing mode that allows you to focus on your writing and a separate editing mode that highlights mistakes and offers suggestions for improvements using the same color-coded editing that is available online. Two buttons allow you to quickly switch between each mode.
The app summarizes all its suggested improvements as well as provides details on your document such as word count and paragraph count. It also scores your writing on a reading level, helping you keep your sentences at a level that is understandable to most readers.
The desktop version of Hemingway also supports markdown, allowing you write in the markup language and preview it within the app. When you are done, Hemingway will export the HTML so you can use it in your favorite CMS.
Hemingway was created by Adam Long and Ben Long. You can use the web version for free, while the desktop version is available for US$4.99. You can find out more about Hemingway and purchase a copy here.