Helpful to me. Helps me keep w/the flow of typing. I can check back on what it has underlined, & I like how quickly that can go w/o needing to proofread so much. I still re-read what I've typed (if it is an email, post on social media, etc.) but it's overall helped me relax & know I have a helper. I gave it only 4 stars because it didn't recognize "Catan" (of famous Settlers of Catan fame). One of the options was to change it to "Caftan"!