Key Features
Grammar & Spelling
Real-time correction of grammar, spelling and punctuation errors — works across browsers, apps and desktop.
Style Suggestions
Suggestions for clarity, conciseness and engagement — rewrites wordy sentences and flags passive voice.
Tone Detection
Detects the tone of your writing — confident, formal, friendly, direct — and suggests adjustments.
Generative AI
GrammarlyGO generates text, rewrites paragraphs and drafts emails from prompts.
Works Everywhere
Browser extension, desktop app and mobile keyboard — suggestions wherever you write.
Grammarly Business
Team admin, style guides and brand tone — consistent writing across your organisation.
Pros & Cons
What we like
Works in every app — Gmail, Google Docs, Slack, Word and more
Free plan covers grammar and spelling for most users
Tone detection is genuinely useful for professional communication
GrammarlyGO adds generative AI to the workflow
Most widely used writing assistant — trusted brand
Mobile keyboard brings suggestions to all mobile writing
Watch out for
Premium at $12/mo required for style and clarity suggestions
GrammarlyGO is less capable than ChatGPT for generation
Can be overly prescriptive — some suggestions change your voice
Occasionally flags correct usage as errors
Best Alternatives
Frequently Asked Questions
Grammarly has a free plan covering basic grammar, spelling and punctuation checks. Premium at $12/month (annual billing) adds style suggestions, clarity improvements, tone detection and GrammarlyGO generative AI. Business plans for teams start at $15/user/month.
Grammarly is better for grammar and spelling correction and works across all your apps. Hemingway Editor is better for improving readability and writing style — it highlights complex sentences, passive voice and adverb overuse. Many writers use both: Grammarly for error correction, Hemingway for style improvement.