Comparison
Grammarly vs QuillBot
Grammarly: AI writing assistant that improves grammar, clarity and tone in real time QuillBot: Paraphrase, proofread and summarise text with AI, in Spanish too.
| Grammarly | QuillBot | |
|---|---|---|
| Rating | 4.2 | 4.3 |
| Price | Freemium Free plan available. Pro plan from $12/month (billed annually) or $30/month (billed monthly). Enterprise: custom pricing. | Freemium Free plan (paraphrasing up to 125 words). Premium $8.33/month (annual). |
| Free plan | ||
| API available | ||
| Open source | ||
| In Spanish | ||
| No watermark | — | — |
| Platforms | Web · Windows · Mac · iOS · Android · Extension | Web · Extension · Windows · Mac |
Grammarly
- Seamless integration across browsers, desktop and mobile apps, with support on over a million platforms
- Solid free plan with basic grammar and spelling corrections plus tone suggestions
- Support for several languages including Spanish, French, German, Portuguese and Italian
- High price for the Pro plan ($144/year) compared with specialised alternatives
- Limited Spanish support compared with English; more basic functionality
QuillBot
- Works very well in Spanish (paraphrasing, grammar, summaries)
- Genuinely useful free plan for occasional use
- Cheap Premium tier ($8.33/month annual) with 9 paraphrasing modes
- The free plan limits paraphrasing to 125 words at a time
- The AI detector and plagiarism checker have limited quotas