Head-to-head · Readability Checkers
Readability Formulas vs ApyHub Readability Scores Documents API
Readability Formulas leads on 0 checks, ApyHub Readability Scores Documents API on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.
Our verdict
- Highest scoreReadability Formulas · 8.6/10
- Free planboth
- Most featuresReadability Formulas · 3 of 4
Readability Formulas scores higher on our rubric for readability checkers: 8.6 against 7.8 out of 10; our editors rank them #5 and #8.
On language support, ApyHub Readability Scores Documents API gives you Multilingual where Readability Formulas offers English.
Readability Formulas is the better fit for mature multi-formula readability analysis. ApyHub Readability Scores Documents API is the better fit for developers analyzing uploaded documents by API.
- Readability Formulas fits best
Mature multi-formula readability analysis
- ApyHub Readability Scores Documents API fits best
Developers analyzing uploaded documents by API
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Side by side
| Feature | Readability Formulas 8.6/10 Visit ↗ | ApyHub Readability Scores Documents API 7.8/10 Visit ↗ |
|---|---|---|
| At a glance | ||
| Editor score | 8.6 | 7.8 |
| Ranking | #5 in Readability Checkers | #8 in Readability Checkers |
| Best for | Mature multi-formula readability analysis | Developers analyzing uploaded documents by API |
| Pricing model | Free plan + paid | Free plan + paid |
| Starting price | Free plan | $16/mo |
| Free plan | ✓ | ✓ |
| Free trial | — | — |
| Deployment | Cloud, Desktop, Browser extension | Cloud |
| Support | Community, Docs | Email, Live chat, Community, Docs · 24/7 |
| Built for | Solo, Small business, Mid-market, Enterprise | Solo, Small business, Mid-market, Enterprise |
| Features Readability Formulas 3/4 · ApyHub Readability Scores Documents API 2/4 | ||
| Sentence analysis | ✓ | ✓ |
| Clarity recommendations | ✓ (best) | 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 | English | Multilingual |
| Our review | ||
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| Cons |
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| Our verdict | Readability Formulas is a readability analysis toolkit for writers, editors, educators, marketers, healthcare providers, and government agencies. It evaluates text difficulty, reading grade level, sentence length, word usage, 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 → |
Strengths and trade-offs
Readability Formulas — where it wins
- Combines multiple readability formulas with consensus scoring.
- Includes hard-word, wordiness, and detailed text statistics.
- Supports batch processing, file imports, graphs, and browser scoring.
Where it doesn't
- Language support is focused on English.
- The product centers on analysis rather than broader writing workflows.
- Readability Calculations and Readability PLUS are separate software offerings.
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
- Readability Formulas8.6/10 · Free plan
A mature readability toolkit for writers, editors, educators, and content teams.
Visit siteFull verdict → - ApyHub Readability Scores Documents API7.8/10 · Free plan
A developer-focused API for readability scores, text metrics, and time estimates.
Visit ApyHubFull verdict →
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update