Grammarly vs QuillBot
A side-by-side comparison of Grammarly and QuillBot, two Writing tools, drawn from Ignaite's continuously-verified listings.
Compared from listings verified as of
Grammarly
WritingAI writing assistant for grammar, tone, clarity, and generative drafting.
View GrammarlyAt a glance
| Attribute | Grammarly | QuillBot |
|---|---|---|
| Category | Writing | Writing |
| Pricing | FREEMIUM | FREEMIUM |
| License | Proprietary | Proprietary |
| Deployment | Cloud | Cloud |
| Platforms | Web, Browser extension, Windows, macOS, iOS, Android | Web, Browser extension, Windows, macOS, iOS, Android |
| Model support | Multi-model | Multi-model |
| Vendor (differs) | Grammarly | Learneo |
The honest brief
Grammarly
Runs system-wide across browsers, desktop, and mobile keyboards, so corrections follow you into any app.
- Works in 1M+ apps and sites
- Real-time grammar/clarity/tone checks
- Browser, desktop, and mobile keyboard
- Plagiarism + AI-text detection on paid tiers
- Monthly AI prompt caps per tier
- Over-corrects style at times
- Weak at long-form generation
- Passive assistant, can't take actions
QuillBot
A Learneo (ex-Course Hero) suite centered on paraphrasing — tooling skews toward students, sitting beside Course Hero and Scribbr.
- Strong paraphrasing and summarizing
- Grammar, citation, and plagiarism tools
- Browser, Word, desktop, and mobile
- Generous free tier, used by 35M+
- Word/character limits on free tier
- Paraphraser can alter meaning
- Less deep than dedicated editors