iAntiSpy for Mac

Mac Utilities

Updated Aug 14, 2026

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iAntiSpy takes a different route from a browser ad blocker. It installs a system extension that checks DNS lookups before they leave your Mac and stops requests to known ad, tracking and malware servers. Because it works at the system level, it covers every browser and app, and its window counts what it blocked and logs the domain behind each request.

Key Features

• Checks DNS lookups locally through a system extension before requests leave
• Blocks ad, tracker and malware servers across every app and browser
• Main window shows a running count of blocked requests
• Log lists each blocked domain and the app that asked for it
• Enhanced Protection adds phishing and scam blocking with daily database updates

How to Download

1. Use the download button on this page, or Download from the official site to open the official iAntiSpy site.
2. Open the downloaded disk image and drag iAntiSpy into your Applications folder, then launch it from there.
3. Approve the system extension when macOS asks, and watch the blocked counter start to move.

System Requirements

iAntiSpy needs macOS 12 or later and runs on Intel and Apple Silicon Macs. It is a tiny app that takes only a few megabytes of disk space, and it must run from the Applications folder.

FAQs

How is iAntiSpy different from a browser extension?

A browser extension only guards one browser. iAntiSpy watches DNS requests from the whole system, so apps and other browsers get the same protection.

Why do some pages still show empty ad spaces?

The block stops the call to the ad server, but the page layout may still leave a gap where the ad would have loaded.

Does iAntiSpy send my browsing to a remote service?

No. The checks run locally on your Mac through its system extension.