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Grammarly vs ProWritingAid
Grammarly scores higher overall (8.6 vs 7.7), but the right pick depends on what you need.
Choose Grammarly if…
Anyone who wants polished, correct writing in every app without copying text into a separate tool
8.6/10★★★★★Full review →Choose ProWritingAid if…
Novelists and long-form writers who want deep editing reports, not just error fixes
7.7/10★★★★★Full review →Side by side
| Grammarly | ProWritingAid | |
|---|---|---|
| Overall score | 8.6/10 | 7.7/10 |
| Rank in category | #1 of 10 | #4 of 10 |
| Price | Freemium · from $12/month | Freemium · from $10/month |
| Free version | Basic spelling, grammar and tone checks plus 100 AI prompts a month | Line-editing reports on up to 500 words, 10 rephrases and 3 Sparks a day |
| Platforms | Web, iOS, Android, Desktop app, Chrome extension, Microsoft Word, Google Docs | Web, Desktop app, Chrome extension, Microsoft Word, Google Docs, Other |
| Made by | Superhuman (formerly Grammarly, Inc.) | ProWritingAid (Orpheus Technology Ltd) |
| Writing quality | 8.5 | 8 |
| Ease of use | 9 | 7 |
| Features | 8.5 | 7.5 |
| Value for money | 7.5 | 8 |
| Platforms | 10 | 7.5 |
Grammarly: 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
- 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
ProWritingAid: what the AI does
- Rephrase tool
- Sparks creative suggestions
- Chapter Critique story feedback
- 25+ writing analysis reports
- Custom style guide
- Far deeper style analysis than other checkers
- Integrates with Word, Google Docs and Scrivener
- Lifetime licence option
- Doesn't train AI on your writing
- Monthly billing ($30) costs three times the annual rate
- Free plan is limited to 500 words per check
- Can flag correct British English usage