Rated 1 out of 5 stars

Sorry but it's not working. It does check the spelling but not the grammar. I just entered "he were doing all this things" and the tools shows no grammar mistakes. It was sooooo good to be true :-(

This review is for a previous version of the add-on (1.30). 

Try a larger writing sample

The best way to try After the Deadline is to run it on your own writing. One made-up sentence isn't a good way to find out what it does/doesn't do. Tools like After the Deadline have their limits. It's impossible to find every error 100% of the time. It's better to think of After the Deadline as a safety net.