When using with Google Docs, the highlight in the text field shows less than half the times it's supposed to, while in Edit mode. When using the side bar to select corrections, if they are not highlighted the document scrolls down to random pages some times. And sometimes when going back to the document from the side bar, it had a yo-yo effect when trying to scroll at first.

Very handy corrections.

There too much lag with this app while typing

Grammarly is Fantastic and very helpful in every way! Writing emails of documents in word is constantly edited and spell checked. I really like it, and, it's free.