AI Grammatic

What AI Grammatic does

AI Grammatic is a Mac app that rewrites selected text to sound natural in over 30 languages. No copying and pasting into a chat window—select text anywhere and press ⌘⌥E to replace it in place. Choose casual or formal tone with the shift key.

Works in any app where you can select text: Slack, Mail, Notion, browsers, and more. Your text is discarded after rewriting. One plan includes everything: pick your preferred AI model (OpenAI, Claude, Gemini, DeepSeek), set language-specific shortcuts, and add custom writing instructions. 7 days free, then $7.99/month or $59/year.

Features

• Select any text, press ⌘⌥E, replace in place
• Over 30 languages, casual or formal tone
• Works in every Mac app without plugins
• Choose from OpenAI, Claude, Gemini, DeepSeek
• 50,000 words per day included