Grammarly

by Grammarly

Freemium

AI writing assistant for grammar, spelling, tone, clarity, and style improvements across emails, documents, and all web platforms.

4.5
out of 5.0 · 30,800+ reviews
Category Writing
Platform WebChrome ExtensionmacOSWindowsiOSAndroid
Last Updated March 22, 2026

Overview

Grammarly is the most widely-used AI writing assistant, focused on improving and polishing text — grammar, spelling, clarity, tone, and style. Unlike content generators, Grammarly functions as an intelligent editor for everything you write. Works across emails, documents, and all web platforms via browser extension, desktop app, and mobile keyboard. Business features include company Style Guides and Brand Tones for team consistency.

Pricing

Free
$0 /mo
  • Basic grammar and spelling checks
  • Tone detection
  • Limited suggestions
Premium
$12 /mo (annual)
  • Full grammar, clarity, tone, style checks
  • Plagiarism detection
  • Full-sentence rewrites
  • GrammarlyGO AI writing assistance
Business
$15 /member/mo
  • Everything in Premium plus company Style Guides, Brand Tones, admin controls, team analytics, SAML SSO

Pros & Cons

Pros

Works everywhere — browser extension, desktop, mobile, all platforms
Excellent grammar, spelling, and clarity improvements
GrammarlyGO for AI-assisted writing and rewriting
Business Style Guides ensure team voice consistency
Non-intrusive — enhances existing writing rather than replacing it
Trusted by millions — proven reliability

Cons

Not a content generator — doesn't create content from scratch
Premium features require paid subscription
Suggestions can be overly conservative for creative writing
Business plan pricing adds up for large teams
Occasional false positives on grammar checks
Limited language support — primarily English

Reviews