ApyHub Readability Scores Documents API vs Health Literacy Advisor

ApyHub Readability Scores Documents API scores documents and publicly accessible web pages, returning a readability score, reading level, and text statistics. File requests accept PDF, DOC, or DOCX uploads up to 100 MB. English checks use the Flesch Reading Ease formula by default, while German uses the Wiener Sachtextformel. Results can include word, sentence, character, and paragraph counts, average lengths, and estimated reading and speaking times. The score includes a grade class, a plain-language label, and an indication of whether a standard readability threshold is met. ApyHub lists uses such as reviewing contracts, policies, manuals, help pages, websites, reports, and proposals; AI agents can also access the API through ApyHub MCP for content reviews. The product page offers five API calls a day free without a card. Starter is free and includes 3,000 atoms per month; Pro costs $16 a month and Pro+ $42 a month. Requests can return a 429 rate_limited error when the plan's per-second limit is exceeded.

Health Literacy Advisor (HLA) assesses and improves document readability using plain-language principles. The desktop edition works inside Microsoft Word, highlighting complicated words, words with three or more syllables, and long sentences. It includes nine readability indices, including Fry-Based, Precise SMOG, Gunning-Fog, ARI, Flesch-Kincaid, Dale-Chall, FORCAST, and Coleman-Liau. An interactive Search and Replace feature offers plain-language alternatives and descriptions for more than 12,000 difficult words, phrases, and medical jargon. ReadEasy Document Assessment pairs readability data with a self-assessment covering readability, content, design, and cultural appropriateness. HLA Online assesses and improves documents in a browser, and saves documents with their scores and details. It works on desktop computers, laptops, tablets, and mobile devices running Windows, Macintosh, Android, or iOS. Its private remote server is described as HIPAA compliant. Desktop and Online licenses run for 365 days from activation and are assigned to one individual; they may not be shared or transferred without written permission. English licenses cost $499 a year, and English and Spanish licenses cost $599 a year.