What it is and who it's for
Grammarly is an AI writing assistant that works on top of any app or browser: it fixes grammar and punctuation, flags tone and clarity, and rewrites or shortens your text. For anyone who writes a lot in English (emails, posts, documents, chats), especially inside teams and companies. It stands out for being everywhere (extensions, desktop, mobile — 10M+ installs) and for its reach: it's the world's largest writing assistant, with 90%+ share of its niche.
Key features
- Real-time grammar, spelling, punctuation and style corrections.
- Tone, clarity and conciseness control; rewriting and shortening of phrases.
- A generative AI assistant (drafts, replies, rephrasing) with a prompt limit.
- Works everywhere: Chrome/Edge, Google Docs, email, messengers, MS Office, mobile.
- Team features, style guides and brand-tone consistency checks.
- Plagiarism detector (on paid plans).
Getting started in 5 minutes
- Install the extension and app from grammarly.com and sign in.
- Write as usual in any text field — suggestions appear as you type; accept the ones you want.
- For drafting or rewriting, open the AI assistant and set the tone and length.
When to use it and when not to
- ✅ Use it if you write a lot in English and want correctness plus tone everywhere you type.
- ✅ Use it if your team needs one consistent style or brand tone with automated checks.
- ❌ Skip it → go with "Notion AI" or "Jasper" if the job is generating long marketing content, not editing and tone.
- ❌ Skip it → go with a general AI chat if you need deep rewriting or research rather than inline proofreading.
Honest pricing
Free plan (basic proofreading); Pro adds advanced suggestions, tone, AI prompts and plagiarism checks; there's a Business tier for teams. Exact numbers are on the vendor's site and do change.
Gotchas
- Russian support is weak — the tool's real strength is English.
- AI suggestions sometimes smooth away the author's voice — don't accept everything blindly.
- The extension sees what you type — for secrets and NDA material, review the data policy first.
- AI prompts are capped by plan; heavy generation isn't what this tool is for.
🤖 Prompt booster
"I'm writing <an email / a post / a document> in English and I use Grammarly. Help me set the right tone (<formal/friendly/confident>) and target length, give me a draft structure for
, and list the typical non-native mistakes I should watch for in the suggestions. Then I'll run the text through Grammarly — tell me which edits to accept carefully so the meaning survives."