I Built a Free AI Grammar Checker That Runs Entirely in the Browser

A few months ago I got tired of copy-pasting my writing between five different tools — Grammarly for grammar, Hemingway for readability, some word counter for stats. So I built

Completely free, no signup, no email. If you write in English regularly — especially if you're a non-native speaker — I'd love feedback on what's missing.

Also have a comparison page if you're curious how it stacks up against Grammarly, ProWritingAid, and others: Best AI Grammar Checkers 2026.