I am really really annoyed by the intrusive ads depicting "happy students" and other left-wing nonsense shouting at me from Every media that I use. Besides, Grammarly is a YAS (Yet Another Spellchecker) only with hype. There are plenty of other hype-free spellcheckers available for Firefox and I will choose one that doesn't annoy me rather than one that I can not relate to At All and one that doesn't bring any novel functionality to the table!!!! If I were on an uninhabited island and Grammarly was the last ever available spell checker, I'd rather go without any spellchecker than touch Grammarly with a barge-pole (even if it's a very long barge pole)!!!! I find Grammarly totally useless and unnecessary... I think I've made myself clear enough?

Makes you make less typos. Handy app when free but can bug you to update.....

Many features only in Pro version.

Grammarly will help you communicate more effectively. As you type, Grammarly flags mistakes and helps you make sure your messages, documents, and social media posts are clear, mistake-free, and impactful.

There is some bug related to https://www.sciencedirect.com website. Everytime I visit it I am forced to disable Grammarly add-on, because of a message saying that the add-on is slowing down the website and because of a dramatical increase of the CPU load. Please fix this.