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10 Tips for Product Managers in AI Startups
Estimated Reading Time: 5 minutes Category: Product Management...
Grammarly review
8.6/10★★★★★Checks grammar, tone and clarity and rewrites text in almost any app you type in
- Best for
- Anyone who wants polished, correct writing in every app without copying text into a separate tool
- Price
- Freemium · from $12/month
Free: Basic spelling, grammar and tone checks plus 100 AI prompts a month - Platforms
- Web, iOS, Android, Desktop app, Chrome extension, Microsoft Word, Google Docs
- Made by
- Superhuman (formerly Grammarly, Inc.)
- App store ratings
- iOS 4.7★ (226K) · Android 4.3★ (264K)
What it is
Grammarly checks spelling, grammar, clarity and tone as you type in the browser, desktop apps, mobile keyboard, Word and Google Docs. Pro adds full-sentence rewrites, plagiarism and AI-text detection, and 2,000 generative AI prompts a month. It is now part of Superhuman, alongside Coda, Superhuman Mail and the Superhuman Go assistant.
Latest: Grammarly's parent company renamed itself Superhuman in October 2025 and added the Superhuman Go assistant to the Grammarly extension.
What the AI does
- Real-time grammar, clarity and tone suggestions
- Full-sentence and paragraph rewrites
- Generative AI prompts for drafting and replies
- Plagiarism and AI-text detection
- Agents such as Citation Finder, AI Grader and Reader Reactions
- Superhuman Go assistant in the browser extension
Pros and cons
- Works almost everywhere you type: browser, desktop, mobile keyboard, Word and Docs
- The most dependable grammar and clarity checks for English
- Free plan is genuinely useful
- Pro bundles plagiarism and AI-text detection
- Monthly billing ($30) is expensive compared with the annual price
- Its AI drafting is weaker than dedicated chatbots for long-form writing
- The extension reads everything you type, which raises privacy questions for some
How it scores
The broadest coverage and most reliable everyday corrections in the category; monthly pricing and a modest AI prompt allowance hold back value.
Feature checklist · 6 of 9
- Grammar and spelling checks (yes)
- Rewrites or paraphrases your sentences (yes)
- Adjusts tone, formality or length (yes)
- Drafts new text from a prompt or template (yes)
- Works inside other apps via extension, add-in or keyboard (yes)
- Supports languages other than English (no)
- Plagiarism or AI-detection check (yes)
- Readability or in-depth style reports (no)
- Custom style guide, brand voice or matches your own style (no)
Alternatives
See all Grammarly alternatives, ranked →
- QuillBot 8.1/10Students and non-native English writers who want to rephrase, summarise and cite on a budget
- LanguageTool 8.0/10People who write in more than one language, especially European languages
- ProWritingAid 7.7/10Novelists and long-form writers who want deep editing reports, not just error fixes
- Notion AI 7.6/10Teams that already keep their docs and notes in Notion
Grammarly vs QuillBotGrammarly vs LanguageToolGrammarly vs ProWritingAidGrammarly vs Notion AIGrammarly vs WordtuneGrammarly vs SudowriteGrammarly vs Hemingway Editor PlusGrammarly vs RytrGrammarly vs Jasper
Sources
▸▸ Grammarly in the news
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AI is changing growth hacking from a manual grind into a self-running system. Whether you’re running a startup or solo project, these five automations can help you grow faster, without adding headcount.