GrammarKey: AI Grammar Fixer

Write flawless English on any iPhone — no matter the model.

GrammarKey is the AI keyboard that fixes your grammar and rewrites your text right where you type: WhatsApp, Gmail, LinkedIn, iMessage, any app. No copy-paste, no app switching. Type, tap once, and sound natural and professional instantly.

WORKS ON EVERY IPHONE Apple's built-in Writing Tools only runs on the newest iPhone 15 Pro and later. GrammarKey brings one-tap AI grammar and rewriting to iPhone 11, 12, 13, 14, SE and beyond. If your phone can't get Apple Intelligence, GrammarKey is how you get AI writing help.

HOW IT WORKS Switch to GrammarKey in any app. Type your message. Tap Fix, Rewrite, or 文→En. The AI corrects your text instantly — in iMessage, WhatsApp, Gmail, Slack, LinkedIn, or anywhere else.

WHAT IT DOES

• Fix: corrects grammar, spelling and punctuation — in your own language
• Rewrite: makes your text sound natural; long-press to pick a tone (Professional, Friendly, or Confident)
• 文→En: write in your language and get polished, correct English
• Move the cursor by holding the space bar, like the system keyboard
• Clean design that looks like the native iOS keyboard
• Your text is never stored — processed in real time and gone

WHO IT'S FOR Non-native English speakers who write professionally. People tired of copy-pasting to Grammarly or switching to ChatGPT. Anyone who wants to sound polished without breaking their flow.

WHY GRAMMARKEY

• No copy-paste. No app switching. It's your keyboard.
• Works on iPhones Apple Intelligence leaves out.
• Same AI as ChatGPT (GPT-4o mini)
• Privacy-first: your text is never stored

FREE & PRO Fix grammar on short messages free and unlimited — no subscription, no sign-up. Longer text (emails, essays, reports) is free 3 times a day, and so are Rewrite and 文→En. GrammarKey Pro removes every limit: unlimited long text, unlimited Rewrite and unlimited 文→En translation. $3.59/month or $17.99/year. Cancel anytime.

Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://grammarkey-proxy.wxqhwbwgdh.workers.dev/privacy