ApyHub Readability Scores Documents API vs Botoi Readability API
ApyHub Readability Scores Documents API
apyhub.comBotoi Readability API
botoi.comSide by side
| Figure | ApyHub Readability Scores Documents API | Botoi Readability API |
|---|---|---|
| Price from | $16/mo | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| API | Yes | Yes |
| Plans published | 3 | 4 |
| Spec score · AI Readability Checkers | 8.2 (#5) | 8.1 (#8) |
| Spec score · Readability Checkers | 8.3 (#7) | 8.2 (#10) |
| Free access | The product page offers five API calls a day for free without a card. | The endpoint page says the free tier includes 5 requests per minute with no credit card required. |
| Integration | The API is available through ApyHub MCP for AI agents to check document or page readability during content review. | The product page provides cURL, JavaScript, TypeScript, Python, and Go examples. |
| Privacy | ApyHub says it does not log API request or response bodies and retains API call metadata logs for 90 days. | Botoi says API request and response payloads are not stored beyond the time needed to fulfill the request, while API usage metadata is logged. |
| Purpose | Scores documents and web pages for readability and returns a score, reading level, and text statistics. | The Readability API analyzes English text and returns Flesch-Kincaid Grade, Flesch Reading Ease, Gunning Fog, and underlying counts. |
| Rate limits | Requests can return a 429 rate_limited error when the plan's per-second rate is exceeded. | Requests exceeding a per-minute or daily cap receive HTTP 429, and daily limits reset at midnight UTC. |
| Use cases | ApyHub lists checking contracts and policies, reviewing manuals and help pages, auditing website readability, and scoring reports and proposals as use cases. | Botoi suggests using the API to enforce plain-language standards, review legal and medical drafts, optimize blog posts for SEO, and compare writing across authors. |
Plans
ApyHub Readability Scores Documents API
- StarterFree
- Pro$16 a month
- Pro+$42 a month
Botoi Readability API
- FreeFree
- Starter$9 a month
- Pro$49 a month
- Business$199 a month
In their own words
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.
Botoi Readability API
Botoi Readability API analyzes English text and returns Flesch-Kincaid Grade, Flesch Reading Ease, Gunning Fog, and underlying counts. A request sends a required text string to POST /v1/text/readability and receives JSON. Flesch Reading Ease scores run from 0 to 100, with higher values indicating easier reading; Gunning Fog estimates the years of formal education needed. The formulas and syllable heuristics are calibrated for English, so grade mapping is not meaningful for other languages. Botoi recommends sending at least 100 words because short samples can produce unstable scores. Suggested uses include enforcing plain-language standards, reviewing legal or medical drafts, refining blog posts for SEO, and comparing writing across authors. Examples are provided in cURL, JavaScript, TypeScript, Python, and Go. The Free plan is free and lists 1,000 requests per day and 10 per minute; the endpoint page separately states five requests per minute for its free tier. Starter costs $9 a month. Requests above a per-minute or daily cap receive HTTP 429, and daily limits reset at midnight UTC.