Free Grammarly Alternative
Grammarly is one of the most popular AI-powered writing assistants, with over 30 million users worldwide. While best known for grammar and spelling corrections, Grammarly also includes readability and clarity features in its Premium and Pro plans. The free version can detect basic punctuation, grammatical, and spelling mistakes, but advanced features like tone detection, full-sentence rewrites, and detailed readability analysis require Grammarly Pro ($12-30/month depending on billing cycle). Grammarly also requires installing a browser extension or desktop app and creating an account. If you just need quick readability scores (Flesch-Kincaid, Gunning Fog, SMOG) without the full writing assistant suite, subscription costs, or account creation, Fixie's Readability Analyzer provides focused readability metrics for free.
Try Readability Analyzer Free →Readability Analyzer vs Grammarly
| Feature | Fixie Readability Analyzer | Grammarly |
|---|---|---|
| Price | Free forever | Free (basic) / $12-30/month (Pro) |
| Signup Required | No | Yes (account required) |
| Privacy / Data Handling | 100% client-side — text never sent to server | Text uploaded for AI analysis |
| Readability Metrics | Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG | Readability scores (Pro plan) |
| Grammar & Spelling Checks | None (readability only) | Yes (comprehensive AI-powered checks) |
| Tone Detection | None | Yes (Pro plan) |
| AI Rewrites | None | Yes (Pro plan, powered by GrammarlyGO) |
| Installation Required | No (web-based) | Browser extension or desktop app |
| Ads | None | None |
Why Choose Fixie?
Grammarly is an incredibly powerful writing assistant that goes far beyond simple readability scoring. The AI-powered platform checks grammar, spelling, punctuation, sentence structure, and style in real-time as you write. The Pro plan ($12-30/month) adds advanced features like tone suggestions (make your writing more confident, friendly, empathetic, or formal), full-sentence rewrites, clarity improvements, vocabulary enhancement, and plagiarism detection (Enterprise plan). GrammarlyGO, the built-in AI writing assistant, can actively rewrite sentences, adjust tone, shorten or expand text, and even generate new content based on prompts. For professional writers, content marketers, students, and anyone who writes frequently, Grammarly is an invaluable tool that catches errors and improves writing quality across emails, documents, social media, and more.
However, Grammarly is a comprehensive writing platform, not just a readability checker. To use it, you need to create an account, install a browser extension or desktop app, and grant the tool access to your writing across websites and applications. Your text is uploaded to Grammarly's servers for AI analysis, which is necessary for the advanced features but may be a privacy concern for sensitive content. The free version is useful for basic grammar checks but doesn't include detailed readability analysis or clarity features — those require a Pro subscription starting at $12/month (annual billing) or $30/month (monthly billing). If you're already a Grammarly user and paying for Pro, the readability features are excellent. But if you just need a quick readability score and don't need the full suite of grammar, tone, and AI writing features, the subscription cost and account requirement may be overkill.
Fixie's Readability Analyzer focuses exclusively on readability metrics: Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, Coleman-Liau Index, and SMOG Index. Paste your text, click analyze, and get instant scores in seconds. The tool runs 100% client-side in your browser with zero server communication — your text never leaves your device, and there's no account, no extension, no app installation. It won't check your grammar, suggest tone changes, or rewrite sentences — it just calculates the industry-standard readability formulas and shows you the results. Perfect for quickly assessing whether your blog post, marketing copy, or documentation hits the right complexity level for your target audience, without the overhead or subscription cost of a full writing platform. If you need comprehensive writing assistance, Grammarly is worth the investment. If you just need readability scores, Fixie gives you exactly that, for free.
How to Use Readability Analyzer
Step 1: Visit the Readability Analyzer
Go to fixie.tools/readability in your browser — works instantly with no installation, extensions, or account creation.
Step 2: Paste Your Text
Copy the text you want to analyze from any source (email, blog post, document, marketing copy) and paste it into the text area.
Step 3: Analyze Readability
Click "Analyze" to instantly calculate multiple readability scores: Flesch-Kincaid Grade Level, Flesch Reading Ease, Gunning Fog Index, Coleman-Liau Index, and SMOG Index.
Step 4: Interpret Scores and Adjust
Review the scores to see if your text matches your target audience's reading level. Lower scores (grade 6-8) are ideal for general audiences, while higher scores (10-12+) suit academic or technical writing. Adjust your text if needed and re-analyze.