Grammarly Review

What Is Grammarly?

It is an AI writing assistant that corrects grammar, spelling, punctuation, tone, and clarity in real time as you type. It works everywhere you write: the browser extension covers Gmail, Google Docs, LinkedIn, and thousands of other sites, while dedicated apps handle Microsoft Word and macOS.

Beyond fixes, its generative AI rewrites sentences to be clearer, adjusts formality for the audience, detects AI-written content, and explains why a suggestion was made, so you become a better writer over time.

Grammar & Spell Checker

The core of the tool is its real-time grammar and spell checker. It flags typos, punctuation mistakes, subject-verb agreement issues, and awkward phrasing as you write, showing a green indicator when your text is clean and a red one when corrections are needed.

Suggestions come with short explanations, so you learn why a fix is recommended. For clearer copy, it also scores your writing for correctness, clarity, engagement, and delivery — and lets you set goals for audience, formality, and tone.

• Real-time grammar, spelling, and punctuation fixes
• Explanations for every suggestion
• Correctness, clarity, engagement, and delivery scores
• Writing goals for audience, formality, and tone

AI Detector

The AI detector analyzes writing to estimate whether it was written by a human or generated by AI, returning a confidence score. It's designed to help educators, editors, and recruiters verify the authenticity of submissions and job applications.

No AI detector is 100% accurate — the company notes that results are probabilistic and should be combined with human judgment rather than treated as proof.

• Human vs AI confidence score
• Useful for educators, editors, and recruiters
• Combined with human judgment for best results

AI Rewrite & Tone Detector

The tone detector reads your message and labels the emotion it conveys — friendly, formal, confident, and more — before you hit send. It catches messages that read as terse or overly aggressive, which is invaluable for email and team chat.

The AI rewrite tools go further: full-sentence rewrites make clunky text clearer, formality sliders adjust copy for the audience, and generative AI can expand on an idea or shorten it. You keep control by reviewing each suggestion before applying it.

• Tone labels before you send
• Full-sentence clarity rewrites
• Formality adjustments
• Generative AI expand and shorten

Plagiarism Checker

The plagiarism checker compares your text against billions of web pages and academic databases, flagging matching passages and linking to the sources it finds. It's a Premium feature aimed at students checking essays and writers verifying originality.

The detector covers published web content and academic sources, so it works well for common checks, though it doesn't search every proprietary academic database.

• Scans billions of web pages and academic sources
• Flags matching passages with source links
• Premium and Business feature

Pricing — Free vs Premium vs Business

Pricing is built around three tiers. The Free plan covers spelling, grammar, punctuation, and basic tone detection — enough for most everyday writing. Premium at $12/month (billed annually) adds full-sentence rewrites, clarity and formality adjustments, plagiarism detection, and generative AI.

Business at $15/user/month adds a shared brand-tone style guide, snippets, admin analytics, and SAML SSO for teams. Everything runs through the same browser extension, so upgrades unlock features without changing how you work.

Grammarly Browser Extension

The browser extension is the fastest way to get the AI writing assistant everywhere you type. Install it once in Chrome, Edge, Firefox, or Safari, and it flags issues in Gmail, Google Docs, LinkedIn, Twitter/X, CMS editors, and thousands of other sites — no copy-pasting required.

The same account syncs across devices, and the desktop apps bring the same suggestions to Microsoft Word and macOS apps. For heavy writers, the extension alone justifies the free plan.

• Works in Gmail, Google Docs, LinkedIn, and more
• One-click suggestions without copy-pasting
• Syncs across devices and browsers
• Desktop apps for Word and macOS

Grammarly vs Other Writing Tools

It is primarily a correction and polish tool, while tools like Jasper and Copy.ai are generative copywriters that draft marketing text from a brief. QuillBot overlaps with it on paraphrasing but is more focused on rewording existing text.

For writers who already produce the words and want them clean, clear, and consistent everywhere, this tool is the best fit. For drafting long-form marketing copy from scratch, Jasper is stronger, and Copy.ai is faster for short social and ad copy.

Pros and Cons

It is easy to recommend for most writers, with a few caveats.

Best For

Recommended use cases and scenarios where Grammarly shines.

Frequently Asked Questions

Common questions about Grammarly, answered.