# GrammarKey: AI Grammar Fixer — Fix & rewrite English, any app

> Fix & rewrite English, any app (iPhone/iPad app by Dmitrii Kolesnikov.)

- Source: https://appshunter.io/ios/app/grammarkey-ai-grammar-fixer/id6764788178 (this page in markdown: same URL + `.md`)
- Developer: [Dmitrii Kolesnikov](https://appshunter.io/developer/1895915460)
- Category: Productivity, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.2 · 2 MB
- Languages: American English
- Released: 2026-05-27
- Data updated: 2026-08-17
- User reviews in markdown: https://appshunter.io/ios/app/grammarkey-ai-grammar-fixer/id6764788178/reviews.md

## What is GrammarKey?

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

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| GrammarKey Monthly | $2.99 | per month |
| GrammarKey Annual | $14.99 | per year |



## Version history (last 5 releases)

### 2.1 — 2026-08-09

• Long text is fixed reliably again: corrections are never cut off part-way, and your original text is never overwritten by a partial result.
• Faster, more responsive typing — especially when you type quickly or use accented letters.
• Selecting a line no longer joins it to the next one.
• Prices and free-trial details now display correctly in every country.

### 2.0 — 2026-08-08

• Short messages: Fix grammar free and unlimited, as always — no subscription needed.
• Long text (emails, essays, reports) now has a clear daily allowance, so you always know where you stand.
• GrammarKey Pro removes every limit: unlimited long text, unlimited Rewrite and 文→En translation.
• Bug fixes and performance improvements.

### 1.9 — 2026-08-01

• Long text is now fixed all at once. Select your text (or Select All), then tap Fix, Rewrite, or 文→En — the whole selection is corrected in one step.
• Longer messages no longer get corrected only in part.
• Bug fixes and performance improvements.

### 1.8 — 2026-07-15

• Grammar fixes are now FREE — unlimited, for everyone. Tap Fix as much as you like.
• Rewrite and 文→En translation: 5 free uses every day (50/month) — Pro removes all limits.
• Bug fixes and performance improvements.

### 1.7 — 2026-07-08

• Faster, more responsive typing — and hold the space bar to move the cursor, just like the system keyboard.
• New 文→En button: write in your own language, tap once, and get natural, correct English.
• Long-press Rewrite to choose a tone: Professional, Friendly, or Confident.
• Fix and Rewrite now work in your language — corrections stay in the language you wrote.
• Clearer privacy info during setup: exactly what GrammarKey does, and never does, with your text.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-17.*