I have ProWritingAid Premium, which supposedly gives me the capabilities of this Add-on but I turned it off--will use it for large volume writing and editing--and bought the Pro version of LT instead for everyday use. It is really efficient on PC resources! That is a big deal for me. Apps that cause my PC to buffer or hang up kill my flow and productivity. I wished LT Pro had a writing level complexity rating, a la Hemingway Editor. The annual fee is not cheap either. My Lifetime PWA Premium license is a vastly superior deal. However, for efficient writing assistance and supervision, as you go, this is showing itself to be a standout tool.