GrammarCheck.ai vs QuillBot
GrammarCheck.ai
grammarcheck.aiQuillBot
quillbot.comSide by side
| Figure | GrammarCheck.ai | QuillBot |
|---|---|---|
| Price from | $2.50/mo | $0.69/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | Yes | — |
| iOS | Yes | Yes |
| Android | Yes | Yes |
| API | Yes | — |
| Plans published | 13 | 8 |
| Spec score · AI Grammar Checkers | 9.4 (#1) | 9.0 (#5) |
| API | The API plans provide grammar-checking API access with stated credit, submission-word, and requests-per-minute limits. | QuillBot states that it currently offers no B2B or B2C API. |
| Free plan | Yes | Yes |
| Rating on Google Play | 4.0 out of 5 from 286 reviews. | 4.5 out of 5 from 22.5K reviews |
| Rating on Trustpilot | 4.4 out of 5 from 15 reviews. | 4.8 out of 5 from 14,302 reviews |
| Support | The site offers contact-form support, live chat and 24/7 priority support on paid plans. | Premium’s Team Plan benefits include priority assistance and account-management support. |
| What it does | GrammarCheck.ai checks and corrects grammar, spelling and punctuation using AI, with highlighted mistakes and automatic suggestions. | QuillBot provides AI tools for paraphrasing, grammar correction, summarization, translation, originality checking, chat, image generation and related writing tasks. |
Plans
GrammarCheck.ai
- Free PlanFree
- Lite$4 a month
- Pro$7 a month
- Free PlanFree
- Lite Premium$2.50 a month
- Lite Monthly$4 a month
- Pro Premium$4 a month
- API Tester$7 a month
- Pro Monthly$7 a month
- API Basic$10 a month
QuillBot
- FreeFree
- Premium$8.33 a month
- PremiumPriced on request
- Premium$8.33 a year
- Team Plan (51+ seats)$69.95 a year
- Team Plan (11–50 seats)$79.95 a year
- Team Plan (2–10 seats)$89.95 a year
- TeamPriced on request
In their own words
GrammarCheck.ai
GrammarCheck.ai checks grammar, spelling, and punctuation, highlighting mistakes and suggesting replacements; a one-click “Fix All Errors” action is also listed. It supports English variants for the US, UK, Australia, and Canada, as well as Spanish, German, French, Portuguese, Italian, and Dutch. Other listed tools include punctuation checking, paraphrasing, plagiarism checking, AI detection, AI humanizing, and summarizing. The service is available on web, iOS, Android, and Linux, with browser extension, desktop app, and mobile app options. Its free plan allows up to 650 words per submission, while Lite allows 2,000 and Pro 6,000. The plans list $4 a month for Lite and $7 a month for Pro; the pricing note separately says paid plans start at $2.50/mo (annual). The service does not offer a free trial, though tools can be used for free. Guest users can make three submissions per minute. The site identifies students, book authors, bloggers, and non-native English speakers as potential users.
QuillBot
QuillBot is a set of AI tools for writing, communication, design, coding, and collaboration across platforms and formats. Its writing tools include paraphrasing, grammar and plagiarism checking, AI detection and humanizing, summarizing, and citation generation. The Free plan allows paraphrasing up to 100 words in two modes, with basic grammar and summaries plus limited access to humanizing and the AI Detector. The Premium comparison lists paraphrasing in 23 languages and translation into more than 40 languages. QuillBot offers desktop and mobile apps for macOS, Windows, Android, and iOS, alongside Chrome, Edge, and Safari extensions. Its desktop app can appear as a widget in apps including Slack, Notes, and Messages; Premium also lists a Word add-in. QuillBot says one subscription works across its apps and platforms, with Premium usable on up to 10 devices at a time. Team plans add writer-management dashboards and centralized billing, while Team Plan benefits include priority assistance and account-management support. The maker says QuillBot began in 2017 as a paraphrasing tool for English-language learners. The Free plan is available; no Premium price is listed here.