Per its new privacy policy, the addon now records and sends all writing back to its data centres allowing LanguageTool admins to read through.

This app is free and it's 100x times better than grammaly i highly suggest using it if you have a bad grammar

Intrusive, overblown and constantly nagging about an upgrade many can't afford. Don't need something as complicated as this.

Basically it's Grammarly but has only what you actually need and it's behind no paywalls.