Readability Checker — Reading Level, Flesch-Kincaid & Writing Score is a strong option, but it is not the right fit for everyone. Below are 10 alternatives compared on rating, install base, pricing and the use case each one actually wins on.
Hemingway-style highlights, Flesch-Kincaid grade, reading level checker. AI-powered sentence rewrite & grammar fix.
| Extension | Rating | Users | Pricing | Best for |
|---|---|---|---|---|
| Readability Checker — Reading Level, Flesch-Kincaid & Writing Score (original) | — | — | Free | Hemingway-style highlights, Flesch-Kincaid grade, reading level checker. AI-powered sentence rewrite & grammar fix. |
| Grammarly | 4.5 | 37M+ | Freemium | Professionals and students who write daily in the browser and want a safety net before hitting send. |
| Revision History: Writing Process Visibility for Google Docs & Slides | 3.7 | 200K+ | Freemium | Built for teachers: See how students write, not just what they wrote. View the writing process in Google Docs & Slides. |
| Justdone: GPT-4o AI Writing Assistant & Grammar Checker | — | — | Free | Elevate your writing with Justdone — your all-in-one tool for grammar checking, paraphrasing, AI writing, and more. |
| Ddict: AI Translation & Writing Assistant | — | — | Free | Translate text and enhance writing with AI for seamless language learning and communication in your browser. |
| Grammar Checker and AI tool - Correcto | — | — | Free | Improve your writing with the AI-powered online grammar and spelling checker in Spanish and our paraphrasing tool. |
| Fix Grammar and Spelling | — | — | Free | Instantly fix grammar and improve your writing in any text field. Check typos, preview changes, and apply corrections with one click |
| Zoho BluePencil: Free Grammar & Spell Checker | — | — | Free | Your secure writing assistant that gives you spelling, grammar, and style suggestions as you type. |
| Outwrite — Grammar checker & rewrite tool | — | — | Free | Write perfect content with Outwrite. Check spelling & grammar, improve writing style, find synonyms and paraphrase sentences. |
| FluentTyper: Autocomplete and Spell Checker | 4.5 | 10K+ | Free | Type less, do more. Get smart autocomplete, spell check, and text expansion to boost your productivity on any website. |
| Google Dictionary (by Google) | 4.4 | 3M+ | Free | View definitions easily as you browse the web. |
Grammar, spelling and tone suggestions everywhere you write.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Grammar, spelling and tone suggestions everywhere you write.
Built for teachers: See how students write, not just what they wrote. View the writing process in Google Docs & Slides.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Built for teachers: See how students write, not just what they wrote. View the writing process in Google Docs & Slides.
Elevate your writing with Justdone — your all-in-one tool for grammar checking, paraphrasing, AI writing, and more.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Elevate your writing with Justdone — your all-in-one tool for grammar checking, paraphrasing, AI writing, and more.
Translate text and enhance writing with AI for seamless language learning and communication in your browser.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Translate text and enhance writing with AI for seamless language learning and communication in your browser.
Improve your writing with the AI-powered online grammar and spelling checker in Spanish and our paraphrasing tool.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Improve your writing with the AI-powered online grammar and spelling checker in Spanish and our paraphrasing tool.
Instantly fix grammar and improve your writing in any text field. Check typos, preview changes, and apply corrections with one click
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Instantly fix grammar and improve your writing in any text field. Check typos, preview changes, and apply corrections with one click
Your secure writing assistant that gives you spelling, grammar, and style suggestions as you type.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Your secure writing assistant that gives you spelling, grammar, and style suggestions as you type.
Write perfect content with Outwrite. Check spelling & grammar, improve writing style, find synonyms and paraphrase sentences.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Write perfect content with Outwrite. Check spelling & grammar, improve writing style, find synonyms and paraphrase sentences.
Type less, do more. Get smart autocomplete, spell check, and text expansion to boost your productivity on any website.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Covers similar ground in the Writing category: Type less, do more. Get smart autocomplete, spell check, and text expansion to boost your productivity on any website.
View definitions easily as you browse the web.
Why it replaces Readability Checker — Reading Level, Flesch-Kincaid & Writing Score: Another popular Writing extension: View definitions easily as you browse the web.
Direct comparisons with the extensions people weigh against it.
Grammarly is the closest match. Covers similar ground in the Writing category: Grammar, spelling and tone suggestions everywhere you write.
Yes — Justdone: GPT-4o AI Writing Assistant & Grammar Checker, Ddict: AI Translation & Writing Assistant, Grammar Checker and AI tool - Correcto are free.
