Proofreader AI Grammar Checker

Proofreader: Say What You Mean. Without The Mistakes.

Trusted by +1,000,000 people globally.

Write clearly and confidently with Proofreader, a grammar checker and writing assistant that works everywhere you type.

Fix grammar, improve clarity, rewrite awkward sentences, and detect AI-generated text — without losing your voice.

A keyboard that works your way
Proofread, rewrite, and create text across apps with the Proofreader keyboard. Clear controls and a fresh design keep your writing tools close:
• Proofread to review and apply grammar, spelling, and punctuation corrections.
• Rewrite to adjust your tone or rephrase a sentence. Move your favourite styles to the front.
• Create to draft emails, messages, and more from a simple prompt.

Customise your keyboard with an optional number row, period key and shortcuts, key previews, and emoji skin tones.

Save and reuse text
Keep replies, addresses, links, and other text you use often in Clipboard. Save and manage clips in the app or keyboard, then tap a clip to paste it while you write.

Write better in seconds
Check grammar, spelling, punctuation, sentence structure, and readability. Review corrections and clear explanations that help you improve your writing over time.

Check and improve writing in English, Spanish, French, German, Portuguese, and more.

Rewrite without changing your voice
Proofreader's rewrite and paraphrasing tools help you reword text naturally while preserving your meaning. Refine the tone, improve clarity, or find another way to express your ideas.

Rewrite messages, emails, essays, captions, and documents in different styles and lengths:
• Polish
• Formal
• Casual
• Confident
• Engaging
• Academic
• Empathetic
• Creative
• Humorous
• Shorten
• Expand

Easy help for proper writing
Whether you're a native speaker or still learning, Proofreader helps you correct grammar, improve sentence structure, expand your vocabulary, and understand corrections.

Choose from multiple English dialects: American, British, Australian, Canadian, New Zealand, or South African.

Writing insights
Get a clear report on how your writing reads beyond individual corrections. See clarity, tone, readability, word and sentence counts, reading and speaking time, sentence length, and word variety.

Detect AI-generated text
Not sure if a piece of writing sounds too robotic? Proofreader's AI Detector analyzes your text and tells you how likely it is to be AI-generated, highlighting the passages that read as machine-written.

Use the AI Detector to:
• Check whether text reads as human or AI
• See a clear human / review / AI verdict
• Spot and highlight AI-sounding passages
• Edit flagged text to sound more natural and authentic

More tools in the app
• Translator for 100+ languages
• Dictionary and definitions
• Contextual vocabulary suggestions
• Text reader to hear your writing aloud
• Writing explanations and style suggestions

Privacy-first by design
Your writing stays private.

Writing tools process the text you submit to provide corrections, rewrites, and other results. Clipboard clips you choose to save are stored on your device. You can edit or delete them in the app or keyboard.

Try Proofreader Pro
Get advanced writing tools, including:

• Unlimited rewriting
• AI text generation
• Advanced writing styles
• Vocabulary enhancements
• Pro grammar corrections
• Professional writing tools
• AI Detection

Licensed Application end User License Agreement (EULA): https://www.apple.com/legal/itunes/dev/stdeula/

Start your free trial today and experience faster, clearer, and more confident writing.