Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector vs ProWritingAid: Grammar Checker & Paraphrasing Tool
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector and ProWritingAid: Grammar Checker & Paraphrasing Tool both compete in the same corner of the Chrome Web Store (grammar), but they are built for different users. Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector has roughly 5M users and a 4.7-star average; ProWritingAid: Grammar Checker & Paraphrasing Tool sits at about 200K users with 4.8 stars.
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector
4.7Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more!
ProWritingAid: Grammar Checker & Paraphrasing Tool
4.8Gain confidence in your writing with the best grammar checker and paraphrasing tool that works wherever you do.
Side-by-side comparison
| Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector | ProWritingAid: Grammar Checker & Paraphrasing Tool | |
|---|---|---|
| Rating | 4.7 / 5 | 4.8 / 5 |
| Reviews | 5,800 | 7,000 |
| Users | ~5M+ | ~200K+ |
| Pricing | Free | Free |
| Category | Productivity | |
| Developer | QuillBot (Course Hero), LLC | Orpheus Technology Limited |
| Last updated | 2026-08-24 | 2026-08-24 |
| Best for | Write better emails, essays and messages with Quillbot's Grammar Checker, Paraphrasing Tool, Generative AI, Summarizer and more! | Gain confidence in your writing with the best grammar checker and paraphrasing tool that works wherever you do. |
Final recommendation
Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector wins on adoption, but ProWritingAid: Grammar Checker & Paraphrasing Tool scores higher with reviewers — start there if ratings matter more.
Frequently asked questions
Can I install Quillbot: AI Writing Assistant with Humanizer, Paraphraser & AI Detector and ProWritingAid: Grammar Checker & Paraphrasing Tool at the same time?
Yes, Chrome runs them independently. Keep both only if they do different jobs; if they overlap, pick one, because each active extension adds memory use, page scripts and another set of permissions.
Where do the ratings and install numbers come from?
From each extension's public Chrome Web Store listing. They can lag the live store slightly, and a dash means the figures have not been synced yet.
Keep researching
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