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Best Flesch-Kincaid Calculator Alternatives in 2026

Updated

20 platforms from readability checkers ranked against Flesch-Kincaid Calculator on the same published basis.

  1. 1
    TextGears Free plan apiWeb $2.48/mo7.3
    Flesch-Kincaid Calculator vs TextGears
  2. 2
    ApyHub Readability Scores Documents API Free plan api $16/mo7.2
    Flesch-Kincaid Calculator vs ApyHub Readability Scores Documents API
  3. 3
    Botoi Readability API Free plan api $9/mo7.2
    Flesch-Kincaid Calculator vs Botoi Readability API
  4. 4
    Text Inspector Free plan apiWeb Free7.2
    Flesch-Kincaid Calculator vs Text Inspector
  5. 5
    Readable Free trial apiWeb $12/mo6.6
    Flesch-Kincaid Calculator vs Readable
  6. 6
    ProWritingAid Free plan extension $10/mo6.0
    Flesch-Kincaid Calculator vs ProWritingAid
  7. 7
    ATOS Analyzer Free plan Web Free5.9
    Flesch-Kincaid Calculator vs ATOS Analyzer
  8. 8
    AnchorKite Readability Checker Free plan Web Free5.8
    Flesch-Kincaid Calculator vs AnchorKite Readability Checker
  9. 9
    Check Readability Free plan extensionWeb Free5.8
    Flesch-Kincaid Calculator vs Check Readability
  10. 10
    Data·yze Readability Analyzer Free plan Web Free5.8
    Flesch-Kincaid Calculator vs Data·yze Readability Analyzer
  11. 11
    Delimiter Readability Checker Free plan Web Free5.8
    Flesch-Kincaid Calculator vs Delimiter Readability Checker
  12. 12
    Readability Analysis Tool (RAT) Free plan LinuxWin Free5.8
    Flesch-Kincaid Calculator vs Readability Analysis Tool (RAT)
  13. 13
    Readability Formulas Free plan extensionMacWebWin Free5.8
    Flesch-Kincaid Calculator vs Readability Formulas
  14. 14
    Slick Write Free plan extensionWeb Free5.8
    Flesch-Kincaid Calculator vs Slick Write
  15. 15
    Analyze My Writing Free plan Web Free5.7
    Flesch-Kincaid Calculator vs Analyze My Writing
  16. 16
    DO101 Readability Checker Free plan Web Free5.7
    Flesch-Kincaid Calculator vs DO101 Readability Checker
  17. 17
    Eclipse Readability Studio Free plan LinuxMacWin Free5.7
    Flesch-Kincaid Calculator vs Eclipse Readability Studio
  18. 19
    Flesch-Kincaid Readability & Grade Level Analyzer Free plan Web Free5.7
    Flesch-Kincaid Calculator vs Flesch-Kincaid Readability & Grade Level Analyzer
  19. 20
    Readability.ch Free plan Web Free5.7
    Flesch-Kincaid Calculator vs Readability.ch
  20. 21
    ReadabilityTool Free plan Web Free5.7
    Flesch-Kincaid Calculator vs ReadabilityTool

Flesch-Kincaid Calculator alternatives compared

#PlatformScoreFree planFromRuns on
1TextGears7.3Free plan$2.48/moAPI, Web
2ApyHub Readability Scores Documents API7.2Free plan$16/moAPI
3Botoi Readability API7.2Free plan$9/moAPI
4Text Inspector7.2Free planFreeAPI, Web
5Readable6.6No$12/moAPI, Web
6ProWritingAid6.0Free plan$10/moBrowser
7ATOS Analyzer5.9Free planFreeWeb
8AnchorKite Readability Checker5.8Free planFreeWeb
9Check Readability5.8Free planFreeBrowser, Web
10Data·yze Readability Analyzer5.8Free planFreeWeb
11Delimiter Readability Checker5.8Free planFreeWeb
12Readability Analysis Tool (RAT)5.8Free planFreeLinux, Windows
13Readability Formulas5.8Free planFreeBrowser, Mac, Web, Windows
14Slick Write5.8Free planFreeBrowser, Web
15Analyze My Writing5.7Free planFreeWeb
16DO101 Readability Checker5.7Free planFreeWeb
17Eclipse Readability Studio5.7Free planFreeLinux, Mac, Windows
19Flesch-Kincaid Readability & Grade Level Analyzer5.7Free planFreeWeb
20Readability.ch5.7Free planFreeWeb
21ReadabilityTool5.7Free planFreeWeb
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Questions about Flesch-Kincaid Calculator alternatives

What is the best alternative to Flesch-Kincaid Calculator?

TextGears, number 1 in readability checkers with a score of 7.3 out of 10. The others here: ApyHub Readability Scores Documents API, Botoi Readability API, Text Inspector and 16 more.

What is the best free alternative to Flesch-Kincaid Calculator?

TextGears is the best-ranked alternative with a free plan. 19 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.