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 3.2

Updates to the filter list.

Ratings and Reviews

4.8 out of 5
55 Ratings

55 Ratings

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.

DavidPabian ,

Best Block

I also use the desktop version because it’s the only ad blocker I’ve found that doesn’t require access to contacts, your richest relatives’ bank accounts and signing up for all current and future marketing scams. This iOS version does as advertised quickly and efficiently.

D. Brasco ,


Perfect. Use easybib site to cite work for class. It’s a great site for citing research papers but is bombarded w/adds. Info input boxes for citing were constantly moving all over screen due to adds popping up like an unstoppable rebel force causing a lotta frustration as I needed to constantly readjust cursor w/mouse. This app stopped that completely. I’m grateful.


Negative Code, LLC
7.5 MB

Requires iOS 10.0 or later. Compatible with iPhone 5s, iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone SE, iPhone 7, iPhone 7 Plus, iPhone 8, iPhone 8 Plus, iPhone X, iPhone XS, iPhone XS Max, iPhone XR, iPad Air, iPad Air Wi-Fi + Cellular, iPad mini 2, iPad mini 2 Wi-Fi + Cellular, iPad Air 2, iPad Air 2 Wi-Fi + Cellular, iPad mini 3, iPad mini 3 Wi-Fi + Cellular, iPad mini 4, iPad mini 4 Wi-Fi + Cellular, 12.9-inch iPad Pro, 12.9-inch iPad Pro Wi-Fi + Cellular, iPad Pro (9.7‑inch), iPad Pro (9.7-inch) Wi‑Fi + Cellular, iPad (5th generation), iPad (5th generation) Wi‑Fi + Cellular, iPad Pro (12.9‑inch) (2nd generation), iPad Pro (12.9‑inch) (2nd generation) Wi‑Fi + Cellular, iPad Pro (10.5‑inch), iPad Pro (10.5-inch) Wi‑Fi + Cellular, iPad (6th generation), iPad Wi-Fi + Cellular (6th generation), iPad Pro (11-inch), iPad Pro (11-inch) Wi-Fi + Cellular, iPad Pro (12.9-inch), iPad Pro (12.9-inch) Wi‑Fi + Cellular, iPad mini (5th generation), iPad mini (5th generation) Wi-Fi + Cellular, iPad Air (3rd generation), iPad Air (3rd generation) Wi-Fi + Cellular,and iPod touch.



Age Rating
Rated 4+
© 2015-2018 David Graham & Josh Peek


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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