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Head-to-head · Readability Checkers

ProWritingAid vs ApyHub Readability Scores Documents API

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score ProWritingAid #4 in Readability Checkers 8.8/10 Free plan Free plan✓ 1 of 4 features Visit ProWritingAid
ApyHub Readability Scores Documents API #8 in Readability Checkers 7.8/10 Free plan Free plan✓ 2 of 4 features Visit ApyHub

ProWritingAid leads on 0 checks, ApyHub Readability Scores Documents API 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 scoreProWritingAid · 8.8/10
  • Free planboth
  • Most featuresApyHub Readability Scores Documents API · 2 of 4

ProWritingAid scores higher on our rubric for readability checkers: 8.8 against 7.8 out of 10; our editors rank them #4 and #8.

ProWritingAid is the better fit for writers needing broad editing integrations. ApyHub Readability Scores Documents API is the better fit for developers analyzing uploaded documents by API.

  • ProWritingAid fits best

    Writers needing broad editing integrations

  • ApyHub Readability Scores Documents API fits best

    Developers analyzing uploaded documents by API

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Side by side

Feature ProWritingAid 8.8/10 Visit ↗ ApyHub Readability Scores Documents API 7.8/10 Visit ↗
At a glance
Editor score 8.8 7.8
Ranking #4 in Readability Checkers #8 in Readability Checkers
Best for Writers needing broad editing integrations Developers analyzing uploaded documents by API
Pricing model Free plan + paid Free plan + paid
Starting price $120/yr $16/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Browser extension Cloud
Support Email, Docs Email, Live chat, Community, Docs · 24/7
Compliance SOC 2 SOC 2, ISO 27001, GDPR
Built for Solo, Small business, Mid-market Solo, Small business, Mid-market, Enterprise
Features ProWritingAid 1/4 · ApyHub Readability Scores Documents API 2/4
Sentence analysis Not checked yet ✓ (best)
Clarity recommendations Not checked yet Not checked yet
Browser extension ✓ (best) Not checked yet
API access Not checked yet ✓ (best)
Specs
Readability formulas Not checked yet 2 formulas
Language support Not checked yet Multilingual
Our review
Pros
  • 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
  • Analyzes PDF, DOC, DOCX files and public webpage URLs
  • Combines two readability formulas with detailed text metrics
  • Offers a free tier and paid access from $16 per month
Cons
  • 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
  • Designed for API workflows rather than a standalone user interface
  • Analysis language options are limited to English and German
  • The Starter plan includes 3,000 atoms per month
Our verdict

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 →

ApyHub Readability Scores Documents API is built for developers adding readability analysis to content review, editorial quality assurance, SEO, or publishing workflows. It accepts uploaded PDF, DOC, and DOCX files, as well as publicly…

Read the review →
  1. ProWritingAidReadability Checkers 8.8Free plan
  2. ApyHub Readability Scores Documents APIReadability Checkers 7.8Free plan

Strengths and trade-offs

  • 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

  • ApyHub Readability Scores Documents API — where it wins

    • Analyzes PDF, DOC, DOCX files and public webpage URLs
    • Combines two readability formulas with detailed text metrics
    • Offers a free tier and paid access from $16 per month

    Where it doesn't

    • Designed for API workflows rather than a standalone user interface
    • Analysis language options are limited to English and German
    • The Starter plan includes 3,000 atoms per 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