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LanguageTool vs QuillBot. Side by side.

Compare pricing, strengths, and use cases so it is easier to pick the right fit.

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LanguageTool

QuillBot

Best overall

For non-technical users who write mostly in English and need a versatile, all-in-one AI writing suite, QuillBot is the better choice thanks to its polished paraphraser, grammar checker, and new design tools. LanguageTool wins for anyone who writes in multiple languages or needs strict data privacy, but its free version is limited and it lacks a mobile app. The single biggest difference: QuillBot is a broader creative toolkit, while LanguageTool is a focused, privacy-first multilingual grammar checker.

LanguageTool

Free Tier Available #118 of 3,826 Web

QuillBot

#73 of 3,826 Web

Scores at a glance

LanguageToolQuillBotPractical Versatility

Onboarding Ease

Ecosystem Fit

Market Value

Choose LanguageTool if

You write emails or documents in a language other than English (e.g., German, French, Spanish)
You work for a company that requires GDPR-compliant, self-hosted tools
You want a free grammar checker that works in Word and Google Docs without a subscription
You need to enforce a specific brand style guide across a team

Choose QuillBot if

You regularly need to rephrase sentences to avoid plagiarism or improve clarity
You are a student who needs a citation generator and summarizer alongside grammar help
You want a single tool that can paraphrase, check grammar, detect AI writing, and generate images
You prefer a clean, modern interface and don't mind paying for a premium plan

Key differences

LanguageTool supports 30+ languages; QuillBot is primarily English-focused
QuillBot has a dedicated paraphraser with multiple modes; LanguageTool's rephrasing is newer and less mature
LanguageTool offers self-hosting and strict GDPR privacy; QuillBot does not
QuillBot includes a plagiarism checker and citation generator; LanguageTool does not
LanguageTool has no mobile app; QuillBot works in a mobile browser but also has no dedicated app
LanguageTool's free tier is more generous for basic grammar; QuillBot's free tier is very limited by word count

Facts side by side

	LanguageTool	QuillBot
Free plan
Mobile app
API access

LanguageTool: strengths & weaknesses

Supports over 30 languages, so it's great for non-native English writers or multilingual teams
Very privacy-focused: you can self-host or use the browser add-on without storing text
Affordable premium tier compared to most AI writing tools
Works directly in Microsoft Word and Google Docs via add-ons
Free version only does basic grammar and spelling, no advanced style or rephrasing
No mobile app at all — you can't use it on your phone
AI rephrasing feature is newer and not as good as QuillBot's dedicated paraphraser
Desktop app can slow down your computer

QuillBot: strengths & weaknesses

Excellent paraphrasing tool that keeps your meaning while changing words — very easy to use
Clean, modern interface that feels intuitive even for beginners
Includes a grammar checker, plagiarism checker, summarizer, citation generator, and now AI image generation
Browser extension works on almost any website and is highly rated
Free version has strict word limits (around 125 words per paraphrase) and no plagiarism checker
Pricing is not clearly published on the website — you have to dig or sign up to see costs
Can lose technical or academic nuance when using the 'Creative' rewrite mode
No mobile app listed, though the website works in a mobile browser

Common questions

Is LanguageTool better than QuillBot for non-native English speakers?

Yes — LanguageTool supports over 30 languages and is specifically designed for multilingual writing, while QuillBot is primarily an English tool.

Can I use QuillBot or LanguageTool on my phone?

Neither has a dedicated mobile app, but both work in a mobile browser. LanguageTool also has a desktop app for Windows and Mac.

Which tool is better for students writing essays?

QuillBot is better for students because it includes a citation generator, summarizer, and plagiarism checker alongside its strong paraphraser.

Is LanguageTool free?

Yes, LanguageTool has a free tier that checks basic grammar and spelling. Premium unlocks advanced style checks, rephrasing, and a personal dictionary.

Does QuillBot have a free version?

Yes, but the free version limits you to 125 words per paraphrase and does not include the plagiarism checker. You'll need Premium for full features.

Which tool is more private?

LanguageTool is more private — you can self-host it, and the browser add-on does not store your text. QuillBot stores data on its servers.

QuillBot is the better all-around writing assistant for English users; LanguageTool is the go-to for multilingual, privacy-conscious writers.

If you write mostly in English and want a tool that can paraphrase, check grammar, and even generate images, start with QuillBot's free version — but be ready to pay for Premium if you hit the word limits. If you write in multiple languages or need strict privacy, go with LanguageTool's free browser extension and upgrade only if you need advanced style checks.

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Detail pages: LanguageTool · QuillBot

LanguageTool

QuillBot

Free plan

Mobile app

API access