Grammarly
Writing correction everywhere you type
Grammarly is the most useful writing tool for most people, because it is present at the moment of writing rather than after it.
Where it wins. Coverage is the product: browser extension, desktop apps, mobile keyboard, and Word add-in mean corrections appear everywhere. Detection of grammar, punctuation, and awkward construction is reliably better than built-in checkers, and the clarity suggestions genuinely tighten prose. Tone detection is unusually useful for email. The free tier catches real errors and is enough for many people.
Where it falls short. Suggestions push toward a flat, corporate register, and accepting all of them will sand your voice off — treat them as questions, not instructions. Premium is expensive for what is largely a checker, and the AI drafting features are weaker than a dedicated assistant. It can slow down in large documents, and sending your text to a third party is worth considering for confidential work.
Our call. Buy it if English is not your first language or you write a lot of email. Writers with a strong voice should keep the free tier and ignore half the advice.
Best for
Non-native English writers and anyone writing high volumes of email who wants errors caught in place.
Key takeaways
- 1Works in almost every text field across browser, desktop, and mobile
- 2Detection is well ahead of built-in spellcheckers
- 3Tone detection is genuinely useful for email
- 4Free tier catches real errors
- 5Suggestions flatten voice toward a corporate register
- 6Premium is expensive for what is largely a checker
Grammarly's advantage is ubiquity. It works in Gmail, Docs, Slack, Word, and almost any text field, which means it catches mistakes where you actually write rather than in a separate tab you have to remember to open. For non-native writers especially, it is the highest-leverage writing tool available.
What we like
- Present everywhere you write
- Reliable error detection
- Helpful clarity and tone feedback
- Strong free tier
Worth noting
- Homogenises writing voice
- Costly premium tier
- Weak AI drafting
- Third-party text processing
Plans
Pricing
Free
- Grammar, spelling, and punctuation
- Tone detection
- Browser extension and mobile keyboard
- Limited AI prompts
Pro
per month, billed yearly
- Clarity and conciseness rewrites
- Full-sentence rewrites
- Plagiarism detection
- Tone and style guides
- Higher AI prompt allowance
Pricing verified Aug 14, 2026. Prices shown are billed annually where available and may change — always confirm on the vendor site.
From real users
Reviews
No verified reviews yet
We publish a user score only once real, verified reviews exist — so this tool is rated on our hands-on testing alone for now. Used it? Your review would be the first.
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Frequently asked questions
Is Grammarly Premium worth it?＋
If English is not your first language or you write a great deal of email, yes. Writers with a strong voice often find the free tier sufficient and Premium's rewrites homogenising.
Does Grammarly flatten your writing voice?＋
It can. Suggestions push toward a neutral corporate register, and accepting all of them sands off what makes prose distinctive. Treat them as questions, not instructions.
Is my text private?＋
Text is sent to Grammarly's servers for analysis. Business plans offer stronger commitments, but for confidential documents consider whether third-party processing is acceptable.
Grammarly
From $12/mo