Data·yze Readability Analyzer vs TextGears

Data·yze Readability Analyzer is a free, ad-supported web app that estimates how readable text may be for a chosen audience. It reports Flesch-Kincaid Reading Ease, Gunning Fog Index, Kincaid Grade Level, SMOG, Dale–Chall, and Fry Reading Graph metrics. Sentence analysis and clarity recommendations are available, while a paragraph view shows statistics and changes in readability through a document. You can enter text or upload a file, then save or download the input. A separate Website Readability Analyzer evaluates an individual webpage and average readability across a site. Its crawler is limited to 1,000 pages per user per day; pausing and resuming on another day can work around that cap. Data·yze says analyzed passages are not collected or stored, although passage length is retained for performance analysis. Uploaded files may be cached and automatically removed within seven days, possibly sooner. The maker cautions that scores are heuristic estimates, not writing-quality measures, and work best with plain text.

TextGears checks writing for spelling, grammar, style, and readability, through its website and API. The API also provides autocorrection, text analysis, language detection, summarization, and keyword extraction, returning JSON through HTTP or HTTPS requests. Its documentation lists 11 languages, including English, French, German, Portuguese, Russian, Italian, Arabic, Spanish, Japanese, Chinese, and Greek, as well as dialect codes such as en-US, en-GB, and pt-BR. A Postman collection and JavaScript library link are available for integration. Free access includes 500 requests per month, 200k characters per month, and a 4k-character request limit. PRO costs $2.48 a month and includes unlimited checks, translations, and paraphrases of long texts, custom dictionary rules, and an option not to store texts. TextGears says AI does not support every language and recommends standard plans when language breadth matters more than AI analysis quality. Readability metrics are recommended for texts of at least 30 words. The maker is headquartered in Tallinn, Estonia.