Tried the premium version, and it doesn't work correctly at all. Several times I had to disable the extension and enable it back to work. What's most disgusting is the support, you email them, and they will respond 2–4 days later for premium users.
I use Quillbot on a daily basis for both academic and work-related writing and couldn’t go without it. I prefer it over leaders in this space such as Grammarly and Wordtune because of how intuitive the product is and the consistent innovation being added by the team behind it. Highly recommend!
