When it works it works very well. About one half the time it signs it's self out. Doesn't pick up mistakes on Facebook. Adds commas where they don't belong.

Grammarly provides an excellent help in composing the written document to ones satisfaction.

It no longer works with Facebook

Overall a great tool for grammar fixing but some parts could be optimized better. One tool that could be worked on it the layout of the pop out screen. Overall it seems a bit sparse and when fixing a problem you have to click on the right side bar which is annoying, it should be set to a hotkey in my opinion.