Overview

Text Inspector is an English text-analysis service for language professionals, academics and students who need vocabulary and readability measures. Its mix of word-level CEFR information and API access makes it more useful than a single-score checker, but its English focus and short-lived analysis data may rule it out for some workflows.

Key features

Text Inspector reports difficulty, readability, lexical diversity and CEFR levels. Its overall difficulty score draws on more than 200 metrics, supplemented by three readability formulas, sentence analysis and clarity recommendations. That breadth can help educators and editors examine a text from several angles; it is less compelling if all you need is one quick readability score.

The CEFR Level Checker assigns individual words a CEFR level and indicates their commonness and difficulty, useful for adjusting teaching materials or evaluating student work. Other tools include Statistics and Readability, Lexical Diversity, Scorecard, Tagger, EVP, BNC, COCA, Academic Word List and Phrases, Knowledge-Based Vocabulary Lists, and Metadiscourse Markers. The API lets people and organisations incorporate Text Inspector's analysis and scoring in their own tools. This makes it a stronger fit for teams embedding language analysis than for those seeking only a standalone checker.

English is the only fully supported language. Other languages may receive limited statistics or lexical-diversity information, so multilingual teams needing comprehensive analysis should look elsewhere. The Organisation subscription's 13,000-word ceiling is the largest available, constrained by server capacity. Analyses are cleared after six hours, and their private URLs are deleted then too; that suits transient review, not long-term storage. Personal data is stored in the EEA while an account is active, and users can delete their account at any time.

Pricing

The free plan costs 0.00 USD per free and allows 250 words, with automatic deletion after six hours. It is suited to brief samples, but the cap is restrictive for reviewing longer passages.

Standard has custom pricing, billed £9.96 monthly / £59.76 yearly. It raises the word limit to 10,000 and adds data export, English Vocabulary Profile, Academic Word List and Scorecard, along with manual data clearing; automatic deletion after six hours still applies. It fits individual users who need larger analyses and exports, but does not remove the retention window.

Organisation has custom pricing, billed £59.76 monthly / £358.56 yearly, for up to 10 people and analyses of up to 13,000 words. It includes the same export and named resources as Standard, plus manual clearing, while keeping automatic deletion after six hours. This is the team option for larger texts, though the stated maximum still constrains long documents.

API access has custom pricing, billed from £360 per year, with 30 days to test free of charge and full API access for use in your own applications. It is the relevant plan for product integration rather than occasional browser analysis. The service is freemium and offers a separate 30-day trial; contact the help team by email at helpteam@textinspector.com with questions or issues.

Platforms

Text Inspector is available on the web and through an API. The API provides a path to incorporate its scoring into existing products, while the web service supports direct analysis.

Who it's for

Language professionals, academics and students are the clearest fit, particularly those preparing teaching materials, tests or evaluating student work. Teams building English-language analysis into their own applications can also consider the API. It is not the right choice for comprehensive multilingual work or workflows that need analyses retained beyond six hours.

Pros and cons

Pros: More than 200 metrics, three readability formulas and word-level CEFR information offer several useful views of English texts.
Pros: API access lets organisations embed analysis and scoring in their own products.
Pros: Standard and Organisation include data export and manual clearing, giving subscribers more control over analysis handling.
Cons: Full support is limited to English, with only limited statistics or lexical-diversity information for other languages.
Cons: The free tier stops at 250 words, and even Organisation tops out at 13,000 words.
Cons: Analysis data and private URLs are removed after six hours, limiting their usefulness for persistent review.

Alternatives

Readable is worth considering for paid web and API access, with a free trial; its ContentPro plan is 12.00 USD per month for one user and lists no website slots or API access. For free browser-based options, A2Z Tools Plain Language Analyzer is an English-only tool, while ToolsVale Readability Checker offers a free plan across web and several desktop and mobile platforms.

AI Readability Checker provides URL or pasted-content scans with pass, warning and fail checks plus rewrite suggestions. eReadable offers free core tools, while Etoolio Easy Read Checker is a free, no-signup option described as unlimited.

Readability Formulas may suit users seeking free calculators and a Readability Scoring System across web, extension and desktop platforms. WebFX Readability Test Tool is a free web option that accepts a URL, pasted text or TXT, DOC and DOCX files. Browse more options in AI Readability Checkers and Readability Checkers.

Verdict

Choose Text Inspector if you need detailed English vocabulary and readability analysis, especially word-level CEFR information or API integration. Its analytical range is the main reason to choose it; look elsewhere if you need broad language support, longer documents than the plan limits allow, or analysis data kept beyond six hours.

	Oanor Readability API	Text Inspector
Free plan	No	Yes
Free trial	No	Yes
Paid from	—	Free
Open source	No	No
Platforms	—	api, Web
Free plan	Yes	Yes
Readability scores	6 scores	—
Grade-level analysis	Yes	—
Input formats	api	—

Oanor Readability API vs Text Inspector

Oanor Readability API

Text Inspector