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Head-to-head · Readability Checkers

Slick Write vs ApyHub Readability Scores Documents API

Updated Oct 2026
Both researched from official sources
4 checks side by side

Higher score Slick Write #7 in Readability Checkers 8.2/10 Free plan Free plan✓ 1 of 4 features Visit Slick Write

ApyHub Readability Scores Documents API #8 in Readability Checkers 7.8/10 Free plan Free plan✓ 2 of 4 features Visit ApyHub

Slick Write leads on 0 checks, ApyHub Readability Scores Documents API on 0, and 4 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

Highest scoreSlick Write · 8.2/10
Free planboth
Most featuresApyHub Readability Scores Documents API · 2 of 4

Slick Write scores higher on our rubric for readability checkers: 8.2 against 7.8 out of 10; our editors rank them #7 and #8.

Slick Write is the better fit for free readability and style checking in browsers. ApyHub Readability Scores Documents API is the better fit for developers analyzing uploaded documents by API.

Slick Write fits best
Free readability and style checking in browsers
ApyHub Readability Scores Documents API fits best
Developers analyzing uploaded documents by API

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Side by side

Show only differences

Feature	Slick Write 8.2/10 Visit ↗	ApyHub Readability Scores Documents API 7.8/10 Visit ↗
At a glance
Editor score	8.2	7.8
Ranking	#7 in Readability Checkers	#8 in Readability Checkers
Best for	Free readability and style checking in browsers	Developers analyzing uploaded documents by API
Pricing model	Free	Free plan + paid
Starting price	Free	$16/mo
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud, Browser extension	Cloud
Built for	Solo, Small business	Solo, Small business, Mid-market, Enterprise
Features Slick Write 1/4 · ApyHub Readability Scores Documents API 2/4
Sentence analysis	Not checked yet	✓ (best)
Clarity recommendations	Not checked yet	Not checked yet
Browser extension	✓ (best)	Not checked yet
API access	Not checked yet	✓ (best)
Specs
Readability formulas	Not checked yet	2 formulas
Language support	Not checked yet	Multilingual
Our review
Pros	Free access to grammar, style, flow, and readability checks Analyzes vocabulary variety, passive voice, repetition, and sentence structure Chrome extension supports Google Docs, WordPress, selections, and text boxes	Analyzes PDF, DOC, DOCX files and public webpage URLs Combines two readability formulas with detailed text metrics Offers a free tier and paid access from $16 per month
Cons	Browser-focused platform coverage limits where it can be used Checks English writing rather than offering broad language coverage Its wide set of analyses may require time to interpret effectively	Designed for API workflows rather than a standalone user interface Analysis language options are limited to English and German The Starter plan includes 3,000 atoms per month
Our verdict	Slick Write is a free, browser-based writing checker for bloggers, novelists, SEO professionals, students, and other writers working in English. It combines grammar error checking with stylistic issue detection, sentence structure… Read the review →	ApyHub Readability Scores Documents API is built for developers adding readability analysis to content review, editorial quality assurance, SEO, or publishing workflows. It accepts uploaded PDF, DOC, and DOCX files, as well as publicly… Read the review →

S Slick WriteReadability Checkers 8.2Free plan
ApyHub Readability Scores Documents APIReadability Checkers 7.8Free plan

Compare the top tools in

Strengths and trade-offs

Slick Write — where it wins
- Free access to grammar, style, flow, and readability checks
- Analyzes vocabulary variety, passive voice, repetition, and sentence structure
- Chrome extension supports Google Docs, WordPress, selections, and text boxes
Where it doesn't
- Browser-focused platform coverage limits where it can be used
- Checks English writing rather than offering broad language coverage
- Its wide set of analyses may require time to interpret effectively
ApyHub Readability Scores Documents API — where it wins
- Analyzes PDF, DOC, DOCX files and public webpage URLs
- Combines two readability formulas with detailed text metrics
- Offers a free tier and paid access from $16 per month
Where it doesn't
- Designed for API workflows rather than a standalone user interface
- Analysis language options are limited to English and German
- The Starter plan includes 3,000 atoms per month

Slick Write8.2/10 · Free plan
A free browser checker that combines grammar review with detailed style and readability analysis.
Visit Slick Write Full verdict →
ApyHub Readability Scores Documents API7.8/10 · Free plan
A developer-focused API for readability scores, text metrics, and time estimates.
Visit ApyHub Full verdict →

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 10 Oct 2026 · How we research and update