# QuillBot

> AI paraphrasing tool with a built-in grammar checker, popular with students and ESL writers as a low-cost grammar option.

Source: https://selfpublishingdirectory.com/writing-tools/quillbot
Website: https://quillbot.com
Category: Writing Tools (https://selfpublishingdirectory.com/writing-tools)
Pricing: freemium — $0–$119
AI-powered: yes
Tags: grammar-checker, paraphrasing, free-tier, browser-extension, multilingual, budget
Last verified: 2026-05-07
Best For: Budget-conscious authors who want a free grammar pass plus occasional paraphrasing
Collaboration: no
Platform: web, ios, android, chrome-extension
Tool Type: grammar-checker

QuillBot is primarily an AI paraphrasing tool, but its bundled grammar checker is a credible free option for spelling, subject-verb agreement, comma usage, tense consistency, and punctuation across US/UK/Australian English plus four other languages.

- **Best for:** Authors who want a free grammar checker without Grammarly's word caps or who occasionally need paraphrasing assistance
- **Key features:** Free grammar checker with no stated word limit, US/UK/Canadian/Australian/German/French/Spanish/Brazilian-Portuguese support, MS Word add-in, Chrome extension, bundled summarizer/citation/plagiarism tools
- **Pricing:** Free (full grammar checker; paraphrasing capped at 125 words); Premium $9.95/mo or $49.95/yr ($4.17/mo); Student plan $74.95/yr
- **Limitations:** Grammar engine is shallower than Grammarly or ProWritingAid — catches obvious errors but misses subtle stylistic issues; no manuscript-level reports; primary audience is students/ESL, not novelists
- **Caveat for fiction:** Applying the paraphrasing tool to your manuscript prose risks rewriting your voice — use the grammar checker only, not the rephraser, on creative work