As Annie Duke said in her book Quit, "quitting on time usually feels like quitting too early." Grammarly was a great in the 2010s, but now it's too easily replaced.
It seems like there are many apps that can be run locally that use LLMs. Although I haven't used this, I found it on reddit and it's made by a student. https://github.com/theJayTea/WritingTools
