GrammarKey: AI Grammar Fixer
Fix & rewrite English, any app
About
This AI-powered keyboard enhances your writing by fixing grammar, spelling, and punctuation directly within any app. It also offers text rewriting to improve clarity and tone, and translation from other languages into polished English. Designed for seamless integration, it works across a wide range of iPhone models.
What's New in GrammarKey
2.7.2
October 13, 2026
Easier setup: a short animation now walks you through the four taps in Settings to turn on GrammarKey. Plus a free week of unlimited Rewrite and 文→En, offered right in the keyboard.
MoreSubscriptions & In-App Purchases
GrammarKey Monthly
Fix grammar in any app. No copy-paste.
FAQ
Does GrammarKey have ads?
GrammarKey is ad-free, allowing for an uninterrupted writing experience. The app offers a free tier for basic grammar fixes and limited advanced features, with an optional Pro subscription for unlimited access.
What are the subscription options for GrammarKey Pro?
GrammarKey Pro offers two subscription plans: a monthly option for $2.99 with a 7-day free trial, and an annual option for $14.99 with a 7-day free trial. Both plans remove all usage limits for rewriting and translation.
How does GrammarKey's AI compare to others?
GrammarKey utilizes the same AI technology as GPT-4o mini, offering advanced capabilities for grammar correction and text rewriting. This ensures high-quality suggestions and improvements to your writing.
Is GrammarKey compatible with my iPhone?
Yes, GrammarKey is designed to work on a wide range of iPhones, including models like the iPhone 11, 12, 13, 14, and SE, and beyond. It provides AI writing assistance even on devices that do not support Apple Intelligence.
How does GrammarKey protect my privacy?
GrammarKey prioritizes user privacy by processing your text in real-time and not storing any of your typed content. This ensures that your messages and documents remain confidential.
What is the update frequency for GrammarKey?
GrammarKey was last updated on October 13, 2026, indicating ongoing development and support. Users can expect regular updates to improve features and performance.
Can I cancel my GrammarKey Pro subscription?
Yes, you can cancel your GrammarKey Pro subscription at any time. The subscription plans are flexible, allowing you to discontinue the service whenever you choose.
What is the age rating for GrammarKey?
GrammarKey has an age rating of 4+, making it suitable for users of all ages. This indicates that the content and functionality are appropriate for a broad audience.
