AnchorKite Readability Checker vs ApyHub Readability Scores Documents API
AnchorKite Readability Checker
anchorkite.com
ApyHub Readability Scores Documents API
apyhub.comSide by side
| Figure | AnchorKite Readability Checker | ApyHub Readability Scores Documents API |
|---|---|---|
| Price from | Free | $16/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| API | — | Yes |
| Plans published | 1 | 3 |
| Spec score · Readability Checkers | 7.8 (#13) | 8.3 (#7) |
| Headquarters | Georgia, US | Amsterdam, Netherlands |
| Privacy | The page says analysis runs locally, with no network requests, analytics, transmission, storage, or logging of the text. | ApyHub says it does not log API request or response bodies and retains API call metadata logs for 90 days. |
| Purpose | Checks pasted text and reports an estimated US reading grade level and six classic readability scores live in the browser. | Scores documents and web pages for readability and returns a score, reading level, and text statistics. |
| Support | AnchorKite lists [email protected] for questions and other messages. | ApyHub lists a Discord community, email, live chat with agents, and a 24/7 AI assistant as support channels. |
Plans
ApyHub Readability Scores Documents API
- StarterFree
- Pro$16 a month
- Pro+$42 a month
In their own words
AnchorKite Readability Checker
AnchorKite Readability Checker is a free browser tool for evaluating pasted English text. It reports Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog, SMOG, Coleman-Liau, and Automated Readability Index scores. A headline grade estimate averages five grade-level formulas. The page also displays word, sentence, syllable, and letter counts, together with words per sentence and syllables per word. Analysis runs locally, with no network requests, analytics, transmission, storage, or logging of the text according to the page. After loading, the browser tab can continue working offline. Syllable counting uses an approximate heuristic, so irregular spellings and proper names can differ by a syllable. The maker advises treating scores as a sanity check because lists, code, dialogue, headings, abbreviations, and short passages can affect formulas. Guidance covers teachers, writers, workplace writing, general audiences, and specialist writing.
ApyHub Readability Scores Documents API
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.