GrammarlyvsQuillBot
Score Comparison
Signals Comparison
Grammarly
- Grammarly refund denied - refunds only where required by law(8/10)
- Automatic renewal charges without clear notice(8/10)
QuillBot
- Free version limited to 125 words only(8/10)
- Rigid no-refund policy frustrates paying users(8/10)
- Premium feels expensive at $100/year(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)
QuillBot
- Paraphrasing sounds robotic and formal(6/10)
- Free version uses rare fancy synonyms(5/10)
- Paraphraser clumps separated text together(5/10)
- Technical writing gets context misinterpretations(5/10)
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)
QuillBot
- Slow performance and loading issues(6/10)
Grammarly
- Grammarly desktop app crashes, disappears or won't stay logged in(8/10)
- Requires internet - useless with slow connection(6/10)
QuillBot
- Requires constant internet connection(5/10)
Grammarly
- Grammarly for Microsoft Office add-in retired - Word users forced to desktop app(7/10)
QuillBot
- Word add-in buggy and unreliable(7/10)
Grammarly
- Slow customer support and refund denial(6/10)
QuillBot
- Support is slow with no live chat or phone(7/10)
Grammarly
- Privacy concerns with text sent to AI providers(6/10)
QuillBot
- Plagiarism checker fails to detect AI content(7/10)
- AI detector gives false positives on human writing(6/10)
- False plagiarism accusations on original work(7/10)
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
QuillBot
Users: 1 user
Limits: 125 words at a time, No plagiarism checker, Only 2 paraphrase modes
Users: 1 user
Limits: No team features, Email-only support
Users: 1 user
Limits: Stuck for 6 months if issues arise, No prorated refunds
Users: 1 user
Limits: Locked in for full year, No team features
Users: Custom
Limits: Pricing not transparent, Requires sales call
Feature Comparison
| Feature | Grammarly | QuillBot |
|---|---|---|
| Core Features | ||
| Grammar & spelling check Free tier includes | ||
| Paraphrasing 8 modes, 125 words free limit | ||
| Punctuation check Free tier includes | ||
| Grammar checking Free and Premium | ||
| Tone detection Basic free, full Pro | ||
| AI content detector Premium only, 90%+ accuracy | ||
| Summarizer 1200 words free, unlimited premium | ||
| Translator 5000 character limit | ||
| 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 | ||
| Generative AI prompts 100 Free, 2,000 Pro, unlimited Enterprise per month | ||
| Integrations | ||
| Browser extensions Chrome, Firefox, Edge, Safari | ||
| Chrome extension Works on most sites | ||
| Desktop apps Windows, Mac - unstable | ||
| Mobile keyboards iOS, Android | ||
| Microsoft Word add-in Buggy, frequent issues reported | ||
| Google Docs integration Browser extension; known issues with footnotes, tables and 30+ page docs | ||
| Mobile app Browser-based only | ||
| 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 | ||
| Pricing | ||
| Free tier 125 words only | ||
| Subscription pause Can pause without losing account | ||
| Team Features | ||
| Team plans Enterprise, contact sales | ||