GrammarlyvsQuillBot

Saas62

Saas

Score Comparison

Overall

Pricing

Usability

Performance

Support

Reliability

Onboarding

Mobile

Security

Integrations

GrammarlyQuillBot

Signals Comparison

Pricing

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)

Usability

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)

Performance

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)

Reliability

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)

Integrations

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)

Support

Grammarly

Slow customer support and refund denial(6/10)

QuillBot

Support is slow with no live chat or phone(7/10)

Security

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

Free

Users: 1 user

Limits: No plagiarism checker or AI detector, no full-sentence rewrites

Frequent upgrade prompts; tone adjustment and full-sentence rewrites locked

Pro (Monthly)

$30/mo

Users: Up to 149 seats

Limits: Per-member pricing; prompts capped at 2,000/month

$30/member/month - 2.5x the annual rate; auto-renews; refunds only if required by law

Pro (Quarterly)

$20/mo

Users: Up to 149 seats

Limits: Not shown on the main plans page - listed in the help center

Billed $60/member every three months; auto-renews quarterly

Pro (Annual)

Popular

$12/yr

Users: Up to 149 seats

Limits: 12-month commitment

$144/member charged upfront; renews automatically; no refund for unused months unless required by law

Superhuman Pro (suite)

$15/mo

Limits: Cannot be merged with an existing Grammarly subscription

On monthly billing Grammarly Pro is a separate $15/month add-on, so the suite + Grammarly Pro costs the same $30/month as standalone

Superhuman Business

$40/mo

Limits: Mostly worth it only if you also want Superhuman Mail

$40/member/month on monthly billing

Enterprise

Free

Users: Unlimited

Limits: Sales process required

Custom pricing via sales only

QuillBot

Free

Users: 1 user

Limits: 125 words at a time, No plagiarism checker, Only 2 paraphrase modes

No plagiarism checker, Limited modes, Premium synonym options locked

Premium (Monthly)

$19.95/mo

Users: 1 user

Limits: No team features, Email-only support

Most expensive option, Only 3-day refund window

Premium (Semi-Annual)

$79.95/yr

Users: 1 user

Limits: Stuck for 6 months if issues arise, No prorated refunds

6-month commitment, Only 3-day refund window

Premium (Annual)

Popular

$99.95/yr

Users: 1 user

Limits: Locked in for full year, No team features

Full year commitment upfront, Only 3-day refund window, No prorated refunds for issues

Enterprise/Team

$0/mo

Users: Custom

Limits: Pricing not transparent, Requires sales call

Contact sales for pricing, Custom negotiation required

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

Signals Comparison

Pricing

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)

Usability

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)

Performance

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)

Reliability

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)

Integrations

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)

Support

Grammarly

Slow customer support and refund denial(6/10)

QuillBot

Support is slow with no live chat or phone(7/10)

Security

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

Free

Users: 1 user

Limits: No plagiarism checker or AI detector, no full-sentence rewrites

Frequent upgrade prompts; tone adjustment and full-sentence rewrites locked

Pro (Monthly)

$30/mo

Users: Up to 149 seats

Limits: Per-member pricing; prompts capped at 2,000/month

$30/member/month - 2.5x the annual rate; auto-renews; refunds only if required by law

Pro (Quarterly)

$20/mo

Users: Up to 149 seats

Limits: Not shown on the main plans page - listed in the help center

Billed $60/member every three months; auto-renews quarterly

Pro (Annual)

Popular

$12/yr

Users: Up to 149 seats

Limits: 12-month commitment

$144/member charged upfront; renews automatically; no refund for unused months unless required by law

Superhuman Pro (suite)

$15/mo

Limits: Cannot be merged with an existing Grammarly subscription

On monthly billing Grammarly Pro is a separate $15/month add-on, so the suite + Grammarly Pro costs the same $30/month as standalone

Superhuman Business

$40/mo

Limits: Mostly worth it only if you also want Superhuman Mail

$40/member/month on monthly billing

Enterprise

Free

Users: Unlimited

Limits: Sales process required

Custom pricing via sales only

QuillBot

Free

Users: 1 user

Limits: 125 words at a time, No plagiarism checker, Only 2 paraphrase modes

No plagiarism checker, Limited modes, Premium synonym options locked

Premium (Monthly)

$19.95/mo

Users: 1 user

Limits: No team features, Email-only support

Most expensive option, Only 3-day refund window

Premium (Semi-Annual)

$79.95/yr

Users: 1 user

Limits: Stuck for 6 months if issues arise, No prorated refunds

6-month commitment, Only 3-day refund window

Premium (Annual)

Popular

$99.95/yr

Users: 1 user

Limits: Locked in for full year, No team features

Full year commitment upfront, Only 3-day refund window, No prorated refunds for issues

Enterprise/Team

$0/mo

Users: Custom

Limits: Pricing not transparent, Requires sales call

Contact sales for pricing, Custom negotiation required

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