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Best Flesch-Kincaid Readability & Grade Level Analyzer Alternatives in 2026

Updated

20 apps from readability checkers ranked against Flesch-Kincaid Readability & Grade Level Analyzer on the same published basis.

  1. 1
    Readability Formulas Free plan extensionMacWebWin Free6.5
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readability Formulas
  2. 2
    ATOS Analyzer Free plan Web Free6.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs ATOS Analyzer
  3. 3
    Eclipse Readability Studio Free plan LinuxMacWin Free6.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs Eclipse Readability Studio
  4. 4
    ProWritingAid Free plan extension $10/mo6.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs ProWritingAid
  5. 5
    Readability Analysis Tool (RAT) Free plan LinuxWin Free6.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readability Analysis Tool (RAT)
  6. 6
    TextGears Free plan apiWeb $2.48/mo6.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs TextGears
  7. 7
    Analyze My Writing Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Analyze My Writing
  8. 8
    AnchorKite Readability Checker Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs AnchorKite Readability Checker
  9. 9
    ApyHub Readability Scores Documents API Free plan api $16/mo6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs ApyHub Readability Scores Documents API
  10. 10
    Botoi Readability API Free plan api $9/mo6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Botoi Readability API
  11. 11
    Check Readability Free plan extensionWeb Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Check Readability
  12. 12
    Data·yze Readability Analyzer Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Data·yze Readability Analyzer
  13. 13
    Delimiter Readability Checker Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Delimiter Readability Checker
  14. 14
    DO101 Readability Checker Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs DO101 Readability Checker
  15. 15
    Flesch-Kincaid Calculator Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Flesch-Kincaid Calculator
  16. 17
    Readability.ch Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readability.ch
  17. 18
    ReadabilityTool Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs ReadabilityTool
  18. 19
    Slick Write Free plan extensionWeb Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Slick Write
  19. 20
    Text Inspector Free plan apiWeb Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs Text Inspector
  20. 21
    UsingEnglish Text Analyser Free plan Web Free6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs UsingEnglish Text Analyser

Flesch-Kincaid Readability & Grade Level Analyzer alternatives compared

#AppScoreFree planFromRuns on
1Readability Formulas6.5Free planFreeBrowser, Mac, Web, Windows
2ATOS Analyzer6.4Free planFreeWeb
3Eclipse Readability Studio6.4Free planFreeLinux, Mac, Windows
4ProWritingAid6.4Free plan$10/moBrowser
5Readability Analysis Tool (RAT)6.4Free planFreeLinux, Windows
6TextGears6.4Free plan$2.48/moAPI, Web
7Analyze My Writing6.3Free planFreeWeb
8AnchorKite Readability Checker6.3Free planFreeWeb
9ApyHub Readability Scores Documents API6.3Free plan$16/moAPI
10Botoi Readability API6.3Free plan$9/moAPI
11Check Readability6.3Free planFreeBrowser, Web
12Data·yze Readability Analyzer6.3Free planFreeWeb
13Delimiter Readability Checker6.3Free planFreeWeb
14DO101 Readability Checker6.3Free planFreeWeb
15Flesch-Kincaid Calculator6.3Free planFreeWeb
17Readability.ch6.3Free planFreeWeb
18ReadabilityTool6.3Free planFreeWeb
19Slick Write6.3Free planFreeBrowser, Web
20Text Inspector6.3Free planFreeAPI, Web
21UsingEnglish Text Analyser6.3Free planFreeWeb
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Questions about Flesch-Kincaid Readability & Grade Level Analyzer alternatives

What is the best alternative to Flesch-Kincaid Readability & Grade Level Analyzer?

Readability Formulas, number 1 in readability checkers with a score of 6.5 out of 10. The others here: ATOS Analyzer, Eclipse Readability Studio, ProWritingAid and 16 more.

What is the best free alternative to Flesch-Kincaid Readability & Grade Level Analyzer?

Readability Formulas is the best-ranked alternative with a free plan. 20 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.