GrammarBuddy's free tier is generous — you can run the AI grammar checker with up to 200 words per check and use the Email Improver three times a day. That is enough for quick fixes on short paragraphs and single emails.
Premium raises the bar considerably. The word limit jumps to 3,000 words per check — ideal for long-form blog posts, academic essays, and business reports. You also unlock detailed explanations for every correction, helping you understand why an edit was made so you can avoid repeating the same mistake. A correction history lets you track progress over time.
Premium members also get full access to the interactive grammar game, unlimited email improvements with no daily cap, and a faster AI model for near-instant results. Billing is monthly at $5 USD, with no lock-in — cancel any time from your account dashboard.