It sends EVERYTHING you type back to their server and when I mark a suggestion wrong, the EXACT same suggestion comes up. Also, it doesn't get everything Google does.

Cool extension. But sometimes it stops working on some sites. E.g. on Google Translate

Grammarly is a great add on to use to fix your writting!

I have been using Grammarily for some time. It has been very useful for spelling and a lot of commas. I have rewritten some paragraphs for clarity which is also helpful. It occasionally makes verb errors with compound sentences. Sometime it wants me to change a word but it will change my meaning or emphasis. I do think it is a useful tool and have renewed my subscription.

does not work most of the time, Just not compatiable with Firefox version 87