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Head-to-head · Grammar Checkers

LanguageTool vs ProWritingAid

  • Updated Oct 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score LanguageTool #2 in Grammar Checkers 9.2/10 Free plan Free plan✓ 5 of 5 features Visit LanguageTool
ProWritingAid #5 in Grammar Checkers 8.5/10 Free plan Free plan✓ 3 of 5 features Visit ProWritingAid

LanguageTool leads on 2 checks, ProWritingAid on 0, and 5 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLanguageTool · 9.2/10
  • Free planboth
  • Most featuresLanguageTool · 5 of 5

LanguageTool scores higher on our rubric for grammar checkers: 9.2 against 8.5 out of 10; our editors rank them #2 and #5.

LanguageTool offers mobile app; ProWritingAid doesn't. LanguageTool leads on languages supported: 31 versus 1.

LanguageTool is the better fit for multilingual users and self-hosted deployments. ProWritingAid is the better fit for writers who want detailed analysis reports.

  • LanguageTool fits best

    Multilingual users and self-hosted deployments

  • ProWritingAid fits best

    Writers who want detailed analysis reports

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Side by side

Feature LanguageTool 9.2/10 Visit ↗ ProWritingAid 8.5/10 Visit ↗
At a glance
Editor score 9.2 8.5
Ranking #2 in Grammar Checkers #5 in Grammar Checkers
Best for Multilingual users and self-hosted deployments Writers who want detailed analysis reports
Pricing model Free plan + paid Free plan + paid
Starting price — $120/yr
Free plan ✓ ✓
Free trial — —
Money-back guarantee 14 days 3 days
Deployment Cloud, Self-hosted, Desktop, Mobile, Browser extension Cloud, Desktop, Browser extension
Platforms Web, Windows, macOS, iOS, Chrome extension Web, Windows, macOS, Chrome extension
Support Email, Live chat, Docs Email, Docs
Compliance GDPR SOC 2
Integrations 11 integrations 12 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market
Features LanguageTool 5/5 · ProWritingAid 3/5
Browser extension ✓ ✓
Desktop app ✓ ✓
Mobile app ✓ (best) —
Style suggestions ✓ ✓
Tone detection ✓ (best) Not checked yet
Specs
Languages supported 31 (best) 1
Our review
Pros
  • Supports grammar, punctuation, style, and paraphrasing in 31 languages
  • Works across web, desktop, mobile, office apps, browsers, and APIs
  • Open-source core with a self-hosted LanguageTool server option
  • 25+ reports analyze structure, repetition, readability, and style
  • Custom guides, tone detection, and rephrasing support focused editing
  • Works across web, desktop apps, browsers, and major writing tools
Cons
  • Premium Monthly costs €19.90 per user per month
  • Team pricing is limited to up to 20 users
  • Advanced features are concentrated in paid plans
  • No mobile app for editing on phones or tablets
  • Free plan limits documents to 500 words
  • English is the supported language, with regional dialect settings
Our verdict

LanguageTool is a multilingual writing assistant for individuals, professionals, teams, and developers. It checks grammar, spelling, punctuation, and style through a web editor, browser extensions, desktop applications, mobile software,…

Read the review →

ProWritingAid is a grammar and writing analysis toolkit for creative writers, business professionals, and students. It checks grammar, spelling, punctuation, style, and readability, then adds more than 25 reports for examining structure,…

Read the review →
  1. LanguageToolGrammar Checkers 9.2Free plan
  2. ProWritingAidGrammar Checkers 8.5Free plan

Strengths and trade-offs

  • LanguageTool — where it wins

    • Supports grammar, punctuation, style, and paraphrasing in 31 languages
    • Works across web, desktop, mobile, office apps, browsers, and APIs
    • Open-source core with a self-hosted LanguageTool server option

    Where it doesn't

    • Premium Monthly costs €19.90 per user per month
    • Team pricing is limited to up to 20 users
    • Advanced features are concentrated in paid plans

  • ProWritingAid — where it wins

    • 25+ reports analyze structure, repetition, readability, and style
    • Custom guides, tone detection, and rephrasing support focused editing
    • Works across web, desktop apps, browsers, and major writing tools

    Where it doesn't

    • No mobile app for editing on phones or tablets
    • Free plan limits documents to 500 words
    • English is the supported language, with regional dialect settings

More comparisons

All grammar checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update