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Head-to-head · Readability Checkers

Check Readability vs ProWritingAid

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score Check Readability #3 in Readability Checkers 9.0/10 Free plan Free plan✓ 3 of 4 features Visit site
ProWritingAid #4 in Readability Checkers 8.8/10 Free plan Free plan✓ 1 of 4 features Visit ProWritingAid

Check Readability leads on 0 checks, ProWritingAid on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreCheck Readability · 9.0/10
  • Free planboth
  • Most featuresCheck Readability · 3 of 4

Check Readability scores higher on our rubric for readability checkers: 9.0 against 8.8 out of 10; our editors rank them #3 and #4.

Check Readability is the better fit for free browser-based readability checking. ProWritingAid is the better fit for writers needing broad editing integrations.

  • Check Readability fits best

    Free browser-based readability checking

  • ProWritingAid fits best

    Writers needing broad editing integrations

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Side by side

Feature Check Readability 9.0/10 Visit ↗ ProWritingAid 8.8/10 Visit ↗
At a glance
Editor score 9.0 8.8
Ranking #3 in Readability Checkers #4 in Readability Checkers
Best for Free browser-based readability checking Writers needing broad editing integrations
Pricing model Free Free plan + paid
Starting price Free $120/yr
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Browser extension Cloud, Desktop, Browser extension
Platforms Web, Chrome extension Web, Windows, macOS, Chrome extension
Support Email Email, Docs
Built for Solo, Small business Solo, Small business, Mid-market
Features Check Readability 3/4 · ProWritingAid 1/4
Sentence analysis ✓ (best) Not checked yet
Clarity recommendations ✓ (best) Not checked yet
Browser extension ✓ ✓
API access Not checked yet Not checked yet
Specs
Readability formulas 9 formulas Not checked yet
Language support English Not checked yet
Our review
Pros
  • Nine readability formulas plus a consensus grade level
  • Actionable guidance on sentence length, complexity, and word choice
  • Chrome extension analyzes selected text and full webpages
  • 25+ reports cover readability, style, structure, and repetition
  • Integrates with Google Docs, Word, Scrivener, Pages, and browsers
  • Custom style guides, tone detection, and rephrasing support editing workflows
Cons
  • English-language analysis only
  • Chrome extension is specific to the Chrome browser
  • Focused on readability metrics rather than broader editing tools
  • Free plan limits documents to 500 words
  • Support is limited to English and its listed dialect settings
  • Premium costs $30 per user monthly when billed month to month
Our verdict

Check Readability is a free web-based checker for content creators, copywriters, SEO specialists, educators, legal professionals, editors, and researchers. Users can type or paste text into its web editor and receive results from nine…

Read the review →

ProWritingAid is a grammar, spelling, punctuation, style, and readability toolkit for creative writers, business professionals, and students. It works through a web editor, Windows and Mac desktop applications, supported writing apps, and…

Read the review →
  1. Check ReadabilityReadability Checkers 9.0Free plan
  2. ProWritingAidReadability Checkers 8.8Free plan

Strengths and trade-offs

  • Check Readability — where it wins

    • Nine readability formulas plus a consensus grade level
    • Actionable guidance on sentence length, complexity, and word choice
    • Chrome extension analyzes selected text and full webpages

    Where it doesn't

    • English-language analysis only
    • Chrome extension is specific to the Chrome browser
    • Focused on readability metrics rather than broader editing tools

  • ProWritingAid — where it wins

    • 25+ reports cover readability, style, structure, and repetition
    • Integrates with Google Docs, Word, Scrivener, Pages, and browsers
    • Custom style guides, tone detection, and rephrasing support editing workflows

    Where it doesn't

    • Free plan limits documents to 500 words
    • Support is limited to English and its listed dialect settings
    • Premium costs $30 per user monthly when billed month to month

More comparisons

All readability checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update