If you have the free version, this works great, but there are some things that you can only do by paying. However, it is far from perfect as some things it suggests don't sound natural or don't work the way it does in the document. Meaning that it will sometimes want you to remove or add a word but it isn't the right place to do that. This still allows work on your part as a writer as you get to decide what is necessary for editing and what isn't based on what it is you are writing and why. I like that the ignore button is there for this reason.