Ka-Block‪!‬ 4+

Open-source ad blocking

David Graham & Josh Peek

    • 4.2 • 194 Ratings
    • Free



Ka-Block! is a content blocker for Safari that prevents ads and tracking scripts from slowing down web pages you visit.

Many sites use third-party scripts to track your behavior across the web, causing pages to load slowly and draining your phone’s battery. Blocking these scripts dramatically improves page load time, data usage, and battery life.

- Fast, curated filter list
- Open source
- Also available for Safari on Mac

Protecting privacy and performance on the web is important. We hope you enjoy Ka-Block!

What’s New

Version 3.5

Updates to the filter list.

Ratings and Reviews

4.2 out of 5
194 Ratings

194 Ratings

timster51 ,

Needs an update

This is a fantastic app. Unfortunately it has developed a problem. Images on certain news web sites will for no reason take on a semi opaque blue filter look. Different images. Changing from blue to correct. The image is impossible to decipher. Click on any link and the blue filter goes away. When Ka Block is disabled the blue cast filter problem is turned off. This problem doesn’t do this on all web sites. When I turned ka block off I was shocked to see the number of ads. SHOCKED! I will keep ka blocked turned on bc anything is better than ad saturation. If you guys can, please fix this. I’m on an iPhone 11 iOS up to date. Thanks.

David Levine ,

Works as advertised

Mobile ads and their trackers are the worst. I had been using 1Blocker for a while, but quite a few sites would be broken where I couldn’t use menus or searches. Ka-Block has changed that. It blocks most of what I hate while not breaking the way websites work. It doesn’t block everything, but that’s not what it’s designed to do. It’s designed to block what it can without breaking websites, and it does a great job at it.

badkitty_ ,

Developer, please update. It isn’t blocking all ads.

To the developers: please update this extension. It is not blocking all ads. For example, I used an ad block tester page and it was not able to block 1. gifs from playing, 2. it loaded a flash banner even though it was not able to execute it, 3. it played an interstitial ad, 4. it shows and plays disable ad block warning ads, 5. it executed bugsnag script, 6. It executed sentry script, 7. it autoredirected me to a page with unsafe content, 8. it displayed pop under ads, push notification request ads, and some banner ads. Your app needs updating.

App Privacy

The developer, David Graham & Josh Peek, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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