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Best DO101 Readability Checker Alternatives in 2026

Updated

20 apps from readability checkers ranked against DO101 Readability Checker on the same published basis.

  1. 1
    ProWritingAid Free plan extension $10/mo6.9
    DO101 Readability Checker vs ProWritingAid
  2. 2
    Readability Formulas Free plan extensionMacWebWin Free6.9
    DO101 Readability Checker vs Readability Formulas
  3. 3
    TextGears Free plan apiWeb $2.48/mo6.9
    DO101 Readability Checker vs TextGears
  4. 4
    Check Readability Free plan extensionWeb Free6.7
    DO101 Readability Checker vs Check Readability
  5. 5
    Text Inspector Free plan apiWeb Free6.7
    DO101 Readability Checker vs Text Inspector
  6. 6
    AnchorKite Readability Checker Free plan Web Free6.6
    DO101 Readability Checker vs AnchorKite Readability Checker
  7. 7
    Data·yze Readability Analyzer Free plan Web Free6.6
    DO101 Readability Checker vs Data·yze Readability Analyzer
  8. 8
    Delimiter Readability Checker Free plan Web Free6.6
    DO101 Readability Checker vs Delimiter Readability Checker
  9. 9
    Hemingway Editor Free trial MacWebWin $0.69/mo6.6
    DO101 Readability Checker vs Hemingway Editor
  10. 10
    ReadabilityTool Free plan Web Free6.6
    DO101 Readability Checker vs ReadabilityTool
  11. 11
    Slick Write Free plan Web Free6.3
    DO101 Readability Checker vs Slick Write
  12. 12
    Readable Free trial apiWeb $12/mo5.9
    DO101 Readability Checker vs Readable
  13. 13
    Readability Analysis Tool (RAT) WinLinux 5.8
    DO101 Readability Checker vs Readability Analysis Tool (RAT)
  14. 14
    Eclipse Readability Studio WinMacLinux 5.7
    DO101 Readability Checker vs Eclipse Readability Studio
  15. 15
    ApyHub Readability Scores Documents API 5.6
    DO101 Readability Checker vs ApyHub Readability Scores Documents API
  16. 16
    StyleWriter Win $90/mo5.6
    DO101 Readability Checker vs StyleWriter
  17. 17
    ATOS Analyzer Web 5.5
    DO101 Readability Checker vs ATOS Analyzer
  18. 18
    Botoi Readability API 5.5
    DO101 Readability Checker vs Botoi Readability API
  19. 20
    Flesch-Kincaid Readability & Grade Level Analyzer Web 5.5
    DO101 Readability Checker vs Flesch-Kincaid Readability & Grade Level Analyzer
  20. 21
    Readability.ch Web 5.5
    DO101 Readability Checker vs Readability.ch

DO101 Readability Checker alternatives compared

#AppScoreFree planFromRuns on
1ProWritingAid6.9Free plan$10/moBrowser
2Readability Formulas6.9Free planFreeBrowser, Mac, Web, Windows
3TextGears6.9Free plan$2.48/moAPI, Web
4Check Readability6.7Free planFreeBrowser, Web
5Text Inspector6.7Free planFreeAPI, Web
6AnchorKite Readability Checker6.6Free planFreeWeb
7Data·yze Readability Analyzer6.6Free planFreeWeb
8Delimiter Readability Checker6.6Free planFreeWeb
9Hemingway Editor6.6No$0.69/moMac, Web, Windows
10ReadabilityTool6.6Free planFreeWeb
11Slick Write6.3Free planFreeWeb
12Readable5.9No$12/moAPI, Web
13Readability Analysis Tool (RAT)5.8No—Windows, Linux
14Eclipse Readability Studio5.7No—Windows, Mac, Linux
15ApyHub Readability Scores Documents API5.6No——
16StyleWriter5.6No$90/moWindows
17ATOS Analyzer5.5No—Web
18Botoi Readability API5.5No——
20Flesch-Kincaid Readability & Grade Level Analyzer5.5No—Web
21Readability.ch5.5No—Web
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Questions about DO101 Readability Checker alternatives

What is the best alternative to DO101 Readability Checker?

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

What is the best free alternative to DO101 Readability Checker?

ProWritingAid is the best-ranked alternative with a free plan. 10 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.