GrammarlyvsProWritingAid
Score Comparison
Signals Comparison
Grammarly
- Grammarly refund denied - refunds only where required by law(8/10)
- Automatic renewal charges without clear notice(8/10)
ProWritingAid
- Free version limited to 500 words(6/10)
- Premium $30/month feels expensive(6/10)
- Refunds only within 3 days of purchase(6/10)
Grammarly
- AI update backlash - users hate forced generative features(8/10)
- Constant upgrade prompts disrupt writing flow(6/10)
- Grammarly icon replaced by Superhuman logo after Superhuman Go activation(5/10)
- Icon obstruction blocks important buttons(5/10)
ProWritingAid
- Inconsistent detection and false positives(7/10)
- Steep learning curve with overwhelming reports(5/10)
- Cannot save grammar preferences(6/10)
- Mishandles dialogue tags and creative writing(6/10)
Grammarly
- Suggestions often incorrect or change intended meaning(8/10)
- Overly rigid suggestions harm creative writing(7/10)
- Plagiarism checker accuracy is poor(7/10)
- AI detector falsely flags non-AI content(7/10)
- GrammarlyGO content sounds bland and generic(6/10)
- Weak spell-check doesn't recognize common misspellings(5/10)
ProWritingAid
- Word add-in crashes and freezes Word(9/10)
- Struggles with large documents over 800 words(8/10)
- Plagiarism checker extremely slow(6/10)
Grammarly
- Grammarly desktop app crashes, disappears or won't stay logged in(8/10)
- Requires internet - useless with slow connection(6/10)
ProWritingAid
No signals
Grammarly
- Grammarly for Microsoft Office add-in retired - Word users forced to desktop app(7/10)
ProWritingAid
- Chrome extension doesn't work on many websites(7/10)
- Scrivener integration loses changes(8/10)
- Gmail and email integration unreliable(5/10)
Grammarly
- Slow customer support and refund denial(6/10)
ProWritingAid
- No live chat or phone support(5/10)
Grammarly
- Privacy concerns with text sent to AI providers(6/10)
ProWritingAid
- AI rephrasing triggers plagiarism detection(9/10)
Pricing Comparison
Grammarly
Users: 1 user
Limits: No plagiarism checker or AI detector, no full-sentence rewrites
Users: Up to 149 seats
Limits: Per-member pricing; prompts capped at 2,000/month
Users: Up to 149 seats
Limits: Not shown on the main plans page - listed in the help center
Users: Up to 149 seats
Limits: 12-month commitment
Limits: Cannot be merged with an existing Grammarly subscription
Limits: Mostly worth it only if you also want Superhuman Mail
Users: Unlimited
Limits: Sales process required
ProWritingAid
Users: 1 user
Limits: 500 word limit per check, Web editor only, Very limited daily usage
Users: 1 user
Limits: No plagiarism checker included, Standard support only
Users: 1 user
Limits: No plagiarism checker, No priority support
Users: 1 user
Limits: No plagiarism checker, Standard support only
Users: 1 user
Limits: Plagiarism checks limited to 60/year
Users: 1 user
Limits: 60 plagiarism checks/year limit
Users: 1 user
Limits: 60 plagiarism checks/year (renews annually)
Feature Comparison
| Feature | Grammarly | ProWritingAid |
|---|---|---|
| Core Features | ||
| Grammar & spelling check Free tier includes | ||
| Grammar checking 91% accuracy in testing | ||
| Punctuation check Free tier includes | ||
| Style suggestions 25+ writing reports | ||
| Tone detection Basic free, full Pro | ||
| Multiple languages Writing checks in 6 languages per Superhuman plans page; deepest support is English | ||
| Pro Features | ||
| Full-sentence rewrites Pro only | ||
| Plagiarism checker Pro only, low accuracy | ||
| AI Features | ||
| AI rephrasing May trigger AI detection | ||
| Generative AI prompts 100 Free, 2,000 Pro, unlimited Enterprise per month | ||
| Integrations | ||
| Browser extensions Chrome, Firefox, Edge, Safari | ||
| Scrivener integration Loses changes, requires app closed | ||
| Desktop apps Windows, Mac - unstable | ||
| Chrome extension Doesn't work on all sites | ||
| Mobile keyboards iOS, Android | ||
| Desktop app Windows and Mac | ||
| Google Docs integration Browser extension; known issues with footnotes, tables and 30+ page docs | ||
| Mobile app No native mobile app | ||
| Microsoft Word integration Via Grammarly for Windows/Mac desktop app; Office add-in being retired, Word-on-Mac add-in discontinued | ||
| Usability | ||
| Offline mode Requires internet | ||
| Team Features | ||
| Team collaboration Basic team plans available | ||
| Pricing | ||
| Lifetime plan $399 Premium, $699 Premium Pro | ||
| Free tier 500 words only, very limited | ||