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.

Proofreader enhances your words instead of replacing them, so your writing still sounds like you — just clearer and more polished.

WRITE BETTER IN SECONDS

Proofreader instantly checks grammar, spelling, punctuation, sentence structure, and readability while you type. Get fast, accurate corrections with clear explanations that help you improve your writing over time.

Proofreader supports English, Spanish, French, German, Portuguese, and more.

SOUND NATURAL & PROFESSIONAL

Good writing is more than fixing mistakes. Proofreader helps your writing sound smoother, more natural, and easier to understand.

Proofreader helps you:

• Fix grammar mistakes

• Correct spelling errors

• Improve punctuation

• Make sentences clearer

• Refine tone and readability

• Choose better words

• Enhance writing flow and fluency

• Detect AI-generated text

Whether you want to sound more professional, academic, friendly, confident, or polished, Proofreader helps refine your writing while preserving your original tone and intent.

REWRITE WITHOUT CHANGING YOUR VOICE

Need help rewriting a sentence? Proofreader's AI rewrite and paraphrasing tools help you reword text naturally without sounding robotic or overly formal.

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

AI KEYBOARD & WRITING ASSISTANT

Use Proofreader keyboard to improve your writing across apps.

Features included:

• AI Keyboard

• One-Tap Proofread Flash

• Grammar & Spell Checker

• Rewrite & Paraphrasing

• AI Text Generation

• Vocabulary Enhancements

• Translator (100+ Languages)

• Dictionary & Definitions

• Text Reader

• Writing Explanations

• Style & Clarity Improvements

Proofread Flash instantly highlights grammar, spelling, and punctuation mistakes with one-tap corrections to help you write faster and more confidently.

PRIVACY-FIRST BY DESIGN

Your writing stays private.

Proofreader does not store or share your writing or personal information. Everything is processed securely with privacy in mind.

TRY PROOFREADER PRO

Unlock advanced AI 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!