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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
    ProWritingAid Free plan extension $10/mo6.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs ProWritingAid
  2. 2
    TextGears Free plan apiWeb $2.48/mo6.3
    Flesch-Kincaid Readability & Grade Level Analyzer vs TextGears
  3. 3
    AnchorKite Readability Checker Free plan Web Free6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs AnchorKite Readability Checker
  4. 4
    ApyHub Readability Scores Documents API Free plan api $16/mo6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs ApyHub Readability Scores Documents API
  5. 5
    Botoi Readability API Free plan api $9/mo6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs Botoi Readability API
  6. 6
    Check Readability Free plan extensionWeb Free6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs Check Readability
  7. 7
    Readability Analysis Tool (RAT) Free plan LinuxWin Free6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readability Analysis Tool (RAT)
  8. 8
    Readability Formulas Free plan extensionMacWebWin Free6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readability Formulas
  9. 9
    Text Inspector Free plan apiWeb Free6.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs Text Inspector
  10. 10
    Data·yze Readability Analyzer Free plan Web Free6.1
    Flesch-Kincaid Readability & Grade Level Analyzer vs Data·yze Readability Analyzer
  11. 11
    Delimiter Readability Checker Free plan Web Free6.1
    Flesch-Kincaid Readability & Grade Level Analyzer vs Delimiter Readability Checker
  12. 12
    DO101 Readability Checker Free plan Web Free6.1
    Flesch-Kincaid Readability & Grade Level Analyzer vs DO101 Readability Checker
  13. 14
    ReadabilityTool Free plan Web Free6.1
    Flesch-Kincaid Readability & Grade Level Analyzer vs ReadabilityTool
  14. 15
    Slick Write Free plan Web Free5.9
    Flesch-Kincaid Readability & Grade Level Analyzer vs Slick Write
  15. 16
    Hemingway Editor Free trial MacWebWin $0.69/mo5.8
    Flesch-Kincaid Readability & Grade Level Analyzer vs Hemingway Editor
  16. 17
    Readable Free trial apiWeb $12/mo5.4
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readable
  17. 18
    ATOS Analyzer Free plan Web Free5.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs ATOS Analyzer
  18. 19
    Readability.ch Free plan Web Free5.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs Readability.ch
  19. 20
    StyleWriter Free trial Win $90/mo5.2
    Flesch-Kincaid Readability & Grade Level Analyzer vs StyleWriter
  20. 21
    Analyze My Writing Web 5.1
    Flesch-Kincaid Readability & Grade Level Analyzer vs Analyze My Writing

Flesch-Kincaid Readability & Grade Level Analyzer alternatives compared

#AppScoreFree planFromRuns on
1ProWritingAid6.4Free plan$10/moBrowser
2TextGears6.3Free plan$2.48/moAPI, Web
3AnchorKite Readability Checker6.2Free planFreeWeb
4ApyHub Readability Scores Documents API6.2Free plan$16/moAPI
5Botoi Readability API6.2Free plan$9/moAPI
6Check Readability6.2Free planFreeBrowser, Web
7Readability Analysis Tool (RAT)6.2Free planFreeLinux, Windows
8Readability Formulas6.2Free planFreeBrowser, Mac, Web, Windows
9Text Inspector6.2Free planFreeAPI, Web
10Data·yze Readability Analyzer6.1Free planFreeWeb
11Delimiter Readability Checker6.1Free planFreeWeb
12DO101 Readability Checker6.1Free planFreeWeb
14ReadabilityTool6.1Free planFreeWeb
15Slick Write5.9Free planFreeWeb
16Hemingway Editor5.8No$0.69/moMac, Web, Windows
17Readable5.4No$12/moAPI, Web
18ATOS Analyzer5.2Free planFreeWeb
19Readability.ch5.2Free planFreeWeb
20StyleWriter5.2No$90/moWindows
21Analyze My Writing5.1No—Web
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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?

ProWritingAid, number 1 in readability checkers with a score of 6.4 out of 10. The others here: TextGears, AnchorKite Readability Checker, ApyHub Readability Scores Documents API and 16 more.

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

ProWritingAid is the best-ranked alternative with a free plan. 16 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation.