Turn on protection
Approve NetBlocker once in macOS System Settings, then switch protection on.
NetBlockerDownloadBuilt exclusively for Apple silicon
Stop any Mac app from going online.
Drop in an app. NetBlocker stops its new connections and reveals the helpers, XPC services, and background processes connecting with it.
Get the free trialAvailable now · macOS 13+
Watch the 67-second demo 7-day free trial. No card required. 30-day money-back guarantee after purchase.
● NetBlocker works locally
Three simple steps
From online to offline in seconds.
No rule syntax. No port numbers. No firewall expertise required.
Drop in an app
Drag any app from Finder. NetBlocker scans its signed identity, bundled helpers, XPC services, and executable components.
See every process
Expand the app to see its main process, bundled components, and related processes observed connecting.
Good to know Quit and reopen a newly blocked app once to close connections it already had open.
Private by design
Your network activity stays private.
NetBlocker uses Apple's Network Extension framework to make a local yes-or-no decision: can this app create a connection? It does not need to see what you send.
- ✓No traffic contents collected
- ✓No account required for the trial
- ✓No cloud rule database
Focused by design
A firewall that feels like a Mac app.
Everything you need to control app access, without the complexity you do not.
Drag. Drop. Block.
Add an app directly from Finder and NetBlocker takes care of the rule.
Built for modern macOS
A native interface, Apple silicon performance, and Apple's supported network APIs.
Find the hidden helpers
Reveal signed helpers, XPC services, executable components, and related background processes.
See what actually connects
Expand any blocked app to see the processes covered by its rule, then restore access with a click.
Early feedback
Simple enough to feel invisible.
What people noticed first while trying NetBlocker on their own Macs.
It is refreshingly easy to use. Drop in the app and NetBlocker takes care of the rest.
It offers the control I wanted at a much lower cost than the other solutions I considered.
Feedback paraphrased from private beta comments to protect testers' identities.
Simple pricing
Try it free. Buy it once.
Seven full days to see if NetBlocker fits your Mac. No card, no subscription, no surprise renewal.
RequiresApple silicon · macOS 13 Ventura or newer
Lifetime licenseAvailable now
€4.99
One payment. No subscription and no recurring charges.
- ✓7-day free trial
- ✓No payment details to start
- ✓Use it for life after purchase
- ✓30-day money-back guarantee
Questions, answered
The details that matter.
Does NetBlocker inspect my traffic?
No. NetBlocker blocks connections by app identity. It does not read web pages, passwords, messages, or the contents of your traffic.
Why do I need to approve a system extension?
macOS requires your explicit permission before an app can filter network connections. NetBlocker guides you to the right setting during setup.
What happens to connections that are already open?
NetBlocker stops new connections. Quit and reopen the blocked app once to ensure any existing connections are closed.
Does NetBlocker find helper apps and background processes?
Yes. NetBlocker scans embedded helpers and XPC services, then observes the real source process behind related connections. Components it can confidently associate with the blocked app are added automatically and shown in its process list.
Does it support Intel Macs?
No. NetBlocker is designed exclusively for Apple silicon Macs with an M1 chip or newer.
What if NetBlocker is not right for me after I buy it?
Your purchase is covered by a 30-day money-back guarantee. Contact us within 30 calendar days of the original purchase for a full refund through Lemon Squeezy.
Choose your kind of control.
Practical advice, honest trade-offs, and a clear starting point.
GET STARTED
Learn how to block internet access for a Mac app
Installation, related processes, and checking protection.
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See the comparison →COMPARENetBlocker vs Radio Silence
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Find your fit →Get in touch
Questions, feedback, or a bug to report?
Send a message and we will get back to you. Your email address is used only to reply.
No address harvestingYour message goes directly to the NetBlocker inbox.
Available now
Take back control of your Mac.
Download the notarized app and try every feature free for seven days. No card required.
Download for Apple silicon Version 1.2.0Requires macOS 13 Ventura or newer · Signed & notarized DMG