I've relied on Grammarly to spellcheck all my writing for a few years (dyslexia prevents me from seeing the errors even when reading it 10 times). However, I find its increasing focus on LLMs and its insistence on rewriting sentences in more verbose ways bothers me a lot. (It removes personality and makes human-written text read like AI text.)
So I've tried out alternatives, and Harper is the closest I've found at the moment... but i still feel like grammarly does a better job at the basic word suggestion.
Really, all I wish for is a spellcheck that can use the context of the sentence to suggest words. Most ordinary dictionary spellchecks can pick the wrong word because it's syntactically closer. They may replace "though" with "thought" because I wrote "thougt" when the sentence clearly indicates "though" is correct; and I see no difference visually between any of the three words.