I give Grammarly 5 stars. The reason is not only will Grammarly correct my spelling but it also corrects my punctuation and my grammar. Also, it will tell me why the error is wrong and give examples of how to correct my mistake which I find very helpful. Another thing I love about it is I don't have to go click to turn it on, Grammarly is on automatically. One of the best things about Grammarly is that it's free. You can pay for it to do other things for you but it's an option and it won't keep asking you to pay for it. I just love Grammarly, I use it daily, and I will tell other's about Grammarly as well.