- Lisa, I would say that this is so far the best correcting tools I've ever seen. It is seamless, it provides explanation and it is a freemium model based (but a free version of it would be far more than sufficient)
When you use grammarly, they put some kind of advert for youtube, so when you watch youtube videos, it will stop and their advert will start. Note, this is not a youtube ad, this is an ad directly from them.
The browser extension is a must have, but I regularly pass my emails through this, or draft them in it just to catch dumb mistakes and make noticeable grammar improvements on the fly