ProWritingAid is a grammar checker, style editor, and writing mentor in one package.
Starting from $70 per year
Best Readability Formulas Alternatives ranked by AI · updated Aug 2026
Readability Formulas is an online resource and calculator for measuring text with established readability tests. It is intended for educators, researchers, editors, and writers who want formula definitions, score interpretation, and basic text analysis.
Top 6 Readability Formulas alternatives
Grammarly is a digital writing assistant that helps users improve their writing by offering suggestions for grammar, punctuation, style, and tone.
Free basic version, Premium starts at $11.66/month
3
Online Utility Readability Calculator
Online-Utility.org
Online Utility Readability Calculator is a browser-based tool for estimating the reading difficulty of text with established readability formulas. It is suited...
Pros
- Free without requiring an account
- Runs directly in a browser with minimal setup
- Provides formula-based readability estimates for pasted text
Cons
- Less comprehensive writing feedback than Readable or ProWritingAid
- Limited collaboration and document-management features
- Older utility-style interface compared with newer web editors
Readable is a readability and content-quality platform for writers, editors, marketers, and organizations. It analyzes reading age, readability formulas, sentiment, tone, and...
Pros
- More focused on readability scoring and content quality than Grammarly
- Includes multiple readability formulas and audience-oriented metrics
- Adds tone, sentiment, and keyword-density analysis
Cons
- Not as useful for detailed grammar correction as LanguageTool
- Paid access is required for its main professional workflow
- Less convenient for a one-off free text check
From $4/mo
Hemingway Editor helps you write in a clear and concise manner by highlighting complex sentences and common errors.
Free basic version, $19.99 for desktop app
6
WebFX Readability Test
WebFX
WebFX Readability Test is a free browser tool that evaluates pasted text using common readability formulas. It is aimed at writers, educators,...
Pros
- Free and fast for one-off text checks
- Reports several familiar readability formulas
- More modern and accessible than many basic utility calculators
Cons
- Does not provide extensive sentence-level editing guidance
- Lacks saved projects and team collaboration
- Less focused on ongoing document management than Readable
How good are these alternatives?
Your feedback helps us improve the AI rankings.
✅ Thanks for your feedback!
Know a better alternative? 🙌
Suggest a product and our AI will verify it's a real alternative to Readability Formulas before adding it to the list.