Yes. Grammarly's free plan covers core grammar, spelling and punctuation checks. Paid plans add tone rewrites, clarity suggestions, plagiarism detection and more advanced style feedback.

Does Grammarly work outside of a browser?

Yes. Alongside the browser extension, Grammarly has desktop apps for Windows and macOS, a mobile keyboard, and add-ins for tools like Microsoft Word, so it can check writing across most places you type.

Can Grammarly change the tone of my writing?

Yes. It can flag whether a message reads as too formal, too blunt or unclear, and suggest rewrites to match the tone you're aiming for, such as friendly, confident or professional.

Is Grammarly safe to use for confidential work?

Grammarly processes text you type to generate its suggestions, so avoid using it on highly sensitive or confidential material unless you've reviewed its data handling settings for your account type.

Grammarly vs QuillBot, what's the difference?

Grammarly focuses primarily on correcting and refining writing you've already drafted, checking grammar, clarity and tone. QuillBot leans more toward paraphrasing and rewriting text in different styles, alongside its own grammar checking.

What is Grammarly? Features, pros, cons and alternatives (2026)

What is Grammarly?

Grammarly is a writing assistant that checks grammar, spelling, punctuation, tone and clarity as you type, wherever you’re typing. Instead of pasting text into a separate tool, Grammarly works through a browser extension, desktop app, mobile keyboard and integrations with tools like Gmail, Google Docs and Microsoft Word, underlining issues directly in whatever you’re writing and suggesting fixes on the spot.

Beyond catching mechanical errors, Grammarly reads for tone and clarity. It can flag a message that sounds harsher than intended, point out a sentence that’s hard to follow, or suggest a more confident phrasing for a proposal. That combination of correction and tone awareness is what has made it a standard tool for everyday professional writing rather than just a spell checker.

Because it runs as a browser extension and set of app integrations rather than a standalone editor you have to copy text into, Grammarly ends up checking writing in the exact place it happens: a reply in Gmail, a comment in Slack, a paragraph in a Google Doc. That reduces the friction of running a separate check before sending something, which is a large part of why it has become a habit for so many people rather than an occasional tool they remember to open.

Key features

Real-time grammar and spelling checks. Flags mistakes as you type across supported apps and websites.
Tone detection. Analyses how a message is likely to come across and suggests adjustments to match your intent.
Clarity suggestions. Highlights wordy or confusing sentences and proposes simpler alternatives.
Browser extension and app integrations. Works inside Gmail, Google Docs, Microsoft Word, Slack and most text fields in a browser.
Plagiarism checking. Available on paid plans, comparing text against a wide index of published content.
Full-sentence rewrites. Suggests reworded versions of a sentence, not just individual word fixes.

How to get started

Create an account at grammarly.com.
Install the browser extension, desktop app or mobile keyboard for the places you write most.
Start typing anywhere it’s active and review the underlined suggestions as they appear.
Set your goals, such as audience and formality, so tone suggestions match your context.
Accept, edit or dismiss each suggestion as you write.

Who Grammarly is for

Grammarly suits anyone who writes regularly for work, including professionals sending emails, students writing essays and assignments, and non-native English speakers who want extra confidence in grammar and phrasing. It’s also useful for teams that want a consistent, professional tone across customer-facing messages, and for writers who want a second pair of eyes catching small mistakes before something goes out.

Tips for getting more from Grammarly

Set your writing goals. Telling Grammarly your intended audience and formality level sharpens its tone suggestions considerably.
Don’t accept every suggestion automatically. Read each one, since tone and style are subjective and Grammarly doesn’t always know the full context.
Use it as a final pass. Draft freely first, then run Grammarly’s check once the structure and ideas are in place.
Check word and character counts with the free word counter alongside Grammarly’s readability feedback.
Compare original and edited drafts with the text compare tool to see exactly what changed after a rewrite.

Grammarly vs alternatives

QuillBot leans more toward paraphrasing and rewriting text in different styles, while Grammarly focuses on correcting and refining writing you’ve already drafted. DeepL is primarily a translation tool, with its DeepL Write feature covering similar clarity and tone editing but only for a limited set of languages. Jasper is built for generating original marketing copy at scale rather than checking and refining writing you’ve already produced. Surfer SEO focuses on optimising content for search rankings rather than grammar and tone.

Is Grammarly worth it?

For everyday writing, Grammarly’s free plan alone catches enough grammar and spelling issues to be worth installing, especially for anyone who writes in English as a second language or sends a high volume of professional messages. The paid plan becomes worth it once tone rewrites, clarity suggestions and plagiarism checking start saving real editing time, particularly for people writing client-facing content or academic work regularly.

Pair Grammarly with Holsha’s free word counter and browse more writing tools in the AI tools catalog.

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