Readability vs Text Inspector
Readability
readability.adaptive-enforcement-lab.comText Inspector
textinspector.comSide by side
| Figure | Readability | Text Inspector |
|---|---|---|
| Price from | Free | £9.96/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | — | Yes |
| Plans published | 1 | 5 |
| Spec score · AI Readability Checkers | 8.2 (#7) | 8.4 (#3) |
| Headquarters | Switzerland | Canterbury, Kent, United Kingdom |
| Intended users | The product site names bloggers, technical writers, documentation teams, students, and curious readers as audiences for its introductory material. | The maker describes the tool as useful for language professionals, academics and students, including preparing teaching materials, tests and evaluating student work. |
| Metrics | It reports grade level, reading ease, reading time, and scores including Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG, and ARI. | The product says it provides an overall difficulty score based on more than 200 metrics. |
| Purpose | Readability analyzes Markdown files and reports readability scores. | Text Inspector analyses English texts and reports difficulty, readability, lexical diversity and CEFR levels. |
Plans
Text Inspector
- FreeFree
- Standard£9.96 a month
- Organisation£59.76 a month
- Developer API£360 a year
- API accessPrice not published
In their own words
Readability
Readability analyzes Markdown files and reports measures of reading complexity. It provides grade level, reading ease and estimated reading time calculated at 200 words per minute. The listed grade-level formulas are Flesch-Kincaid, Gunning Fog, Coleman-Liau, SMOG and ARI. It also measures word and sentence metrics and can detect or require MkDocs-style admonitions. Results can be produced as a table, Markdown, JSON, summary or report. Configurable thresholds can fail CI checks when documentation exceeds them, and a.readability.yml file supports path-specific overrides. The project documents a Go command-line tool, Docker, a GitHub Action and pre-commit hooks, alongside CI/CD examples for GitLab CI, CircleCI and Jenkins. Pre-built binaries are listed for Linux and macOS in amd64 and arm64, and Windows in amd64. The project identifies its license as MIT and lists no paid plans. Its documentation cautions that scores measure word and sentence complexity, not accuracy, completeness, context or tone.
Text Inspector
Text Inspector analyses English text for difficulty, readability, lexical diversity, and CEFR levels. Its overall difficulty score draws on more than 200 metrics, while the CEFR Level Checker gives individual words a level along with their commonness and difficulty. Listed tools include Statistics and Readability, Lexical Diversity, Scorecard, Tagger, EVP, BNC, COCA, Academic Word List and Phrases, Knowledge-Based Vocabulary Lists, and Metadiscourse Markers. An API lets people and organisations add analysis and scoring to their own products. The maker describes it as useful to language professionals, academics, and students preparing teaching materials or tests and evaluating student work. English is fully supported; other languages may receive limited statistics or lexical-diversity information. The Free plan covers 250 words and automatically deletes analysis data after six hours. The Organisation plan allows up to 13,000 words, the largest stated limit. A 30-day trial is listed for API access, which starts from £360 per year.