Data·yze Readability Analyzer vs Hemingway Editor

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.

Hemingway Editor scores writing for readability and highlights sentences and issues that may weaken or complicate a message. Editor Plus adds rewriting for wordy sentences and passive voice, grammar fixes, and controls for tone, length and style. It also provides document review with writing feedback and suggestions, and supports importing and exporting Word, Markdown and HTML files. The Classic desktop app works offline and keeps writing on the computer; it can publish to WordPress or export HTML and Markdown for a blogging platform or CMS. Hemingway Editor is available on web, macOS and Windows. The free plan is available. Individual 5K annual access costs $8.33 a month, billed as 100 USD annually, and includes 5,000 AI sentences per month. Hemingway Editor 3 desktop costs $19.99, paid once and does not include new AI features. Hemingway says document content is discarded after processing and is not used to train AI models. For analysis or rewriting, content is sent through Hemingway to an LLM provider, currently OpenAI, Google or Anthropic, and then discarded. Editor Plus does not yet have SOC 2 or ISO certification.