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Grammarly

A writing assistant that checks grammar, clarity and tone in your browser, email, documents and phone keyboard, with AI rewriting and generation. By Superhuman (Grammarly).
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Price

$12/mo
Pro plan. Free plan.

Works on

Web · iPhone · Android · Desktop
22+ languages

AI League

91 pts · #1 in writing for work
See the writing for work standings

Free plan and price

Free plan. Free plan: basic error detection, tone detection and 100 AI prompts a month.

$12 a month billed monthly: full-sentence rewrites, tone adjustment, plagiarism and AI detection, 2,000 AI prompts a month.

Good for / not for

  • Emails, reports and everyday work writing
  • Non-native English writers
  • Long-form marketing campaigns

Pros and cons

  • Works in almost every app and website
  • Recurring free plan
  • Rated 4.7 on the App Store (225,000 ratings)
  • Rewrites and tone changes need Pro
  • Suggestions can flatten your personal style

Alternatives

AppFree planLanguagesFrom
QuillBotFree plan23+$19.95/mo
WordtuneFree plan2+—
Notion AIFree trial20+$12/mo

How Grammarly scores

Score0–10Basis
Quality8.5App Store rating 4.7/5. Average App Store (US) user rating from 225,000 ratings.
Ease10.0Checklist: Web · iPhone · Android · Desktop; plain-language prompt yes; start without paying yes.
Free plan9.0Free plan: basic error detection, tone detection and 100 AI prompts a month.
Value10.0Entry price $12 a month (monthly billing), compared with the cheapest app in the task.
Languages8.0Writing support in over 20 languages (Grammarly blog).
Points91(Quality×30% + Ease×20% + Free plan×15% + Value×20% + Languages×15%) × 10

Sources

Checked Sep 28, 2026. Prices and plans change often; check the official site before you buy.