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.
Drag in an app. Its new internet connections stop. NetBlocker is the simple, private firewall built for macOS.
Get the free trialComing soon · macOS 13+
7-day free trial. No card required.
NetBlockerControl which apps can access the network
Protection on
Drop an app hereChoose an app in Finder to block its new network connections.
Blocked apps2
DDesign Appcom.example.designBlocked
MMeeting Appcom.example.meetingBlocked
● 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 identifies it by its code-signing identity.
Stay in control
See everything you block in one list and restore access whenever you want.
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.
Identity-based blocking
Rules follow the signed app identity — including the helper processes it launches.
One clear list
See what is blocked and restore access with a click. No hidden rules to hunt down.
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 licenseComing soon
One-time purchase
Launch pricing will be announced before downloads open.
- ✓7-day free trial
- ✓No payment details to start
- ✓Use it for life after purchase
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 it support Intel Macs?
No. NetBlocker is designed exclusively for Apple silicon Macs — M1 or newer.
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.
Launching soon
Take back control of your Mac.
NetBlocker is almost ready. The first release will include a free 7-day trial.
Requires macOS 13 Ventura or newer.