The main problem is that Grammarly doesn't want their models/rules/etc. to end up out of their control, hence they do the checking on their server.<p>But this means it MUST BE a key logger, how else could it work?<p>But tbh. what irritates me the most, is how bad their product is.<p>At least with this type of errors I do (some dyslexia, English being the second language, and me having some uh bad past with English in school).<p>Like the "corrections" they recommend (which go beyond what a "dictionary" spell checker is able to do) are often wrong and will result in another wrong text.<p>It's pretty obsessed with writing in one specific style.<p>It seems to have some major problems with listings.<p>It also seems to want to change anything with some subtle undertone to a version without it.<p>I would say maybe for people already somewhat good at English which do not make the kind of errors I often do, writing soulless "business" English, it might be good.<p>If it wouldn't be a major risk to confidentiality.<p>I do not trust a company like Grammarly (or most companies) to be cable of defending their IT infrastructure against professional attackers, and subtle backdooring Grammarly seems quite useful (for certain actors).<p>Btw. same for 1Password it's a supper juicy target, especially if it adds a crypto wallet (as they plan to do).<p>Also I'm pretty sure the usage of Grammarly for writing letters to customers is in conflict with more then just the GDPR (if they contain sensitive information, in more then one way).