Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Readability Checkers

ProWritingAid vs Slick Write

  • Updated Oct 2026
  • Both researched from official sources
  • 2 checks side by side
Higher score ProWritingAid #4 in Readability Checkers 8.8/10 Free plan Free plan✓ 1 of 4 features Visit ProWritingAid
Slick Write #7 in Readability Checkers 8.2/10 Free plan Free plan✓ 1 of 4 features Visit Slick Write

ProWritingAid leads on 0 checks, Slick Write on 0, and 2 are even. Who comes out ahead on the 2 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreProWritingAid · 8.8/10
  • Free planboth

ProWritingAid scores higher on our rubric for readability checkers: 8.8 against 8.2 out of 10; our editors rank them #4 and #7.

ProWritingAid is the better fit for writers needing broad editing integrations. Slick Write is the better fit for free readability and style checking in browsers.

  • ProWritingAid fits best

    Writers needing broad editing integrations

  • Slick Write fits best

    Free readability and style checking in browsers

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature ProWritingAid 8.8/10 Visit ↗ Slick Write 8.2/10 Visit ↗
At a glance
Editor score 8.8 8.2
Ranking #4 in Readability Checkers #7 in Readability Checkers
Best for Writers needing broad editing integrations Free readability and style checking in browsers
Pricing model Free plan + paid Free
Starting price $120/yr Free
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Desktop, Browser extension Cloud, Browser extension
Platforms Web, Windows, macOS, Chrome extension Web, Chrome extension
Built for Solo, Small business, Mid-market Solo, Small business
Features ProWritingAid 1/4 · Slick Write 1/4
Sentence analysis Not checked yet Not checked yet
Clarity recommendations Not checked yet Not checked yet
Browser extension ✓ ✓
API access Not checked yet Not checked yet
Specs
Readability formulas Not checked yet Not checked yet
Language support Not checked yet Not checked yet
Our review
Pros
  • 25+ reports cover readability, style, structure, and repetition
  • Integrates with Google Docs, Word, Scrivener, Pages, and browsers
  • Custom style guides, tone detection, and rephrasing support editing workflows
  • 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
Cons
  • Free plan limits documents to 500 words
  • Support is limited to English and its listed dialect settings
  • Premium costs $30 per user monthly when billed month to month
  • 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
Our verdict

ProWritingAid is a grammar, spelling, punctuation, style, and readability toolkit for creative writers, business professionals, and students. It works through a web editor, Windows and Mac desktop applications, supported writing apps, and…

Read the review →

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 →
  1. ProWritingAidReadability Checkers 8.8Free plan
  2. Slick WriteReadability Checkers 8.2Free plan

Strengths and trade-offs

  • ProWritingAid — where it wins

    • 25+ reports cover readability, style, structure, and repetition
    • Integrates with Google Docs, Word, Scrivener, Pages, and browsers
    • Custom style guides, tone detection, and rephrasing support editing workflows

    Where it doesn't

    • Free plan limits documents to 500 words
    • Support is limited to English and its listed dialect settings
    • Premium costs $30 per user monthly when billed month to month

  • 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

More comparisons

All readability checkers comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update