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Best Flesch-Kincaid Calculator Alternatives in 2026

Updated

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

  1. 1
    ProWritingAid Free plan extension $10/mo6.9
    Flesch-Kincaid Calculator vs ProWritingAid
  2. 2
    Readability Formulas Free plan extensionMacWebWin Free6.9
    Flesch-Kincaid Calculator vs Readability Formulas
  3. 3
    TextGears Free plan apiWeb $2.48/mo6.9
    Flesch-Kincaid Calculator vs TextGears
  4. 4
    ATOS Analyzer Free plan Web Free6.8
    Flesch-Kincaid Calculator vs ATOS Analyzer
  5. 5
    Eclipse Readability Studio Free plan LinuxMacWin Free6.8
    Flesch-Kincaid Calculator vs Eclipse Readability Studio
  6. 6
    Readability Analysis Tool (RAT) Free plan LinuxWin Free6.8
    Flesch-Kincaid Calculator vs Readability Analysis Tool (RAT)
  7. 7
    Check Readability Free plan extensionWeb Free6.7
    Flesch-Kincaid Calculator vs Check Readability
  8. 8
    Text Inspector Free plan apiWeb Free6.7
    Flesch-Kincaid Calculator vs Text Inspector
  9. 9
    Analyze My Writing Free plan Web Free6.6
    Flesch-Kincaid Calculator vs Analyze My Writing
  10. 10
    AnchorKite Readability Checker Free plan Web Free6.6
    Flesch-Kincaid Calculator vs AnchorKite Readability Checker
  11. 11
    ApyHub Readability Scores Documents API Free plan api $16/mo6.6
    Flesch-Kincaid Calculator vs ApyHub Readability Scores Documents API
  12. 12
    Botoi Readability API Free plan api $9/mo6.6
    Flesch-Kincaid Calculator vs Botoi Readability API
  13. 13
    Data·yze Readability Analyzer Free plan Web Free6.6
    Flesch-Kincaid Calculator vs Data·yze Readability Analyzer
  14. 14
    Delimiter Readability Checker Free plan Web Free6.6
    Flesch-Kincaid Calculator vs Delimiter Readability Checker
  15. 15
    DO101 Readability Checker Free plan Web Free6.6
    Flesch-Kincaid Calculator vs DO101 Readability Checker
  16. 16
    Flesch-Kincaid Readability & Grade Level Analyzer Free plan Web Free6.6
    Flesch-Kincaid Calculator vs Flesch-Kincaid Readability & Grade Level Analyzer
  17. 17
    Hemingway Editor Free trial MacWebWin $0.69/mo6.6
    Flesch-Kincaid Calculator vs Hemingway Editor
  18. 18
    Readability.ch Free plan Web Free6.6
    Flesch-Kincaid Calculator vs Readability.ch
  19. 19
    ReadabilityTool Free plan Web Free6.6
    Flesch-Kincaid Calculator vs ReadabilityTool
  20. 20
    Slick Write Free plan extensionWeb Free6.6
    Flesch-Kincaid Calculator vs Slick Write

Flesch-Kincaid Calculator alternatives compared

#AppScoreFree planFromRuns on
1ProWritingAid6.9Free plan$10/moBrowser
2Readability Formulas6.9Free planFreeBrowser, Mac, Web, Windows
3TextGears6.9Free plan$2.48/moAPI, Web
4ATOS Analyzer6.8Free planFreeWeb
5Eclipse Readability Studio6.8Free planFreeLinux, Mac, Windows
6Readability Analysis Tool (RAT)6.8Free planFreeLinux, Windows
7Check Readability6.7Free planFreeBrowser, Web
8Text Inspector6.7Free planFreeAPI, Web
9Analyze My Writing6.6Free planFreeWeb
10AnchorKite Readability Checker6.6Free planFreeWeb
11ApyHub Readability Scores Documents API6.6Free plan$16/moAPI
12Botoi Readability API6.6Free plan$9/moAPI
13Data·yze Readability Analyzer6.6Free planFreeWeb
14Delimiter Readability Checker6.6Free planFreeWeb
15DO101 Readability Checker6.6Free planFreeWeb
16Flesch-Kincaid Readability & Grade Level Analyzer6.6Free planFreeWeb
17Hemingway Editor6.6$0.69/moMac, Web, Windows
18Readability.ch6.6Free planFreeWeb
19ReadabilityTool6.6Free planFreeWeb
20Slick Write6.6Free planFreeBrowser, Web
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Questions about Flesch-Kincaid Calculator alternatives

What is the best alternative to Flesch-Kincaid Calculator?

ProWritingAid, number 1 in readability checkers with a score of 6.9 out of 10. The others here: Readability Formulas, TextGears, ATOS Analyzer and 16 more.

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

ProWritingAid 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: documentation depth, a free tier and the platforms it runs on.