Ka-Block! vs Dark Reader

KBKa-Block!7.6Visit Dark Reader7.4Visit

Higher score KB Ka-Block! #4 in Safari Extensions 7.6/10 Free plan Free plan✓ 1 of 4 features Visit Ka-Block!

vs

Dark Reader #5 in Safari Extensions 7.4/10 Free plan Free plan✓ 1 of 4 features Visit Dark Reader

• Ka-Block! fits best

  Privacy-minded users who prefer a free open-source blocker

• Dark Reader fits best

  Users who want dark themes across websites

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	KBKa-Block! 7.6/10 Visit ↗	Dark Reader 7.4/10 Visit ↗
At a glance
Editor score	7.6	7.4
Ranking	#4 in Safari Extensions	#5 in Safari Extensions
Best for	Privacy-minded users who prefer a free open-source blocker	Users who want dark themes across websites
Pricing model	Free	Free plan + paid
Starting price	Free	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Desktop, Mobile, Browser extension, Self-hosted	Browser extension, Mobile
Platforms	macOS, iOS	Web, Chrome extension, iOS, macOS, Android
Built for	Solo, Small business	Solo, Small business, Mid-market, Enterprise
Features Ka-Block! 1/4 · Dark Reader 1/4
Content blocking	Not checked yet	Not checked yet
Sync available	Not checked yet	Not checked yet
App Store listing	Not checked yet	Not checked yet
Open source	✓	✓
Specs
Supported devices	Not checked yet	Not checked yet
Our review
Pros	Blocks advertising domains and tracking scripts Makes zero network connections Open-source implementation for iOS and macOS	Adjust brightness, contrast, sepia, and saturation Set themes and custom filters per site, with domain-pattern lists Offers Dynamic, Filter, Filter+, and Static theme modes
Cons	No custom filter lists Filter updates arrive with new extension versions Supports Safari only	Focused on dark themes rather than ad or tracker blocking Theme generation may need per-site adjustments The Safari app is a separate paid-support route
Our verdict	Ka-Block! is a free, open-source Safari content blocker for iPhone, iPad, and Mac. It is aimed at solo users and small teams that want a straightforward way to block advertising domains and tracking scripts in Safari. The Free plan… Read the review →	Dark Reader generates dark themes for web pages, giving people who prefer darker displays controls over how individual sites look. The main browser extension is classified as free and open source. It is available for Chrome, Firefox,… Read the review →

Strengths and trade-offs

• Ka-Block! — where it wins

  • Blocks advertising domains and tracking scripts
  • Makes zero network connections
  • Open-source implementation for iOS and macOS

  Where it doesn't

  • No custom filter lists
  • Filter updates arrive with new extension versions
  • Supports Safari only

• Dark Reader — where it wins

  • Adjust brightness, contrast, sepia, and saturation
  • Set themes and custom filters per site, with domain-pattern lists
  • Offers Dynamic, Filter, Filter+, and Static theme modes

  Where it doesn't

  • Focused on dark themes rather than ad or tracker blocking
  • Theme generation may need per-site adjustments
  • The Safari app is a separate paid-support route

• KBKa-Block!7.6/10 · Free plan

  A free, open-source Safari blocker with no network connections and curated filters.

  Visit Ka-Block!Full verdict →
• Dark Reader7.4/10 · Free plan

  A free, open-source extension for adjustable dark themes and per-site controls.

  Visit Dark ReaderFull verdict →