Drag, drop, block
Add an app from Finder instead of creating endpoint, port, or protocol rules.
Mac app firewall download
Download NetBlocker for Mac.
Block selected apps from making new internet connections without turning off Wi-Fi for the rest of your Mac.
Download NetBlocker 1.1.4Free 7-day trial · No card required
- Apple silicon: M1 or newer
- macOS 13 Ventura or later
- Developer ID signed · Apple notarized
Version 1.1.4Current public release.
3.2 MB downloadNative Apple silicon build.
€4.99 lifetimeOne payment after the trial.
30-day guaranteeFull refund after purchase if it is not right for you.
Why NetBlocker
Download a firewall built around apps, not rule syntax.
Choose what should stay offline. NetBlocker handles the connection decision locally on your Mac.
See related processes
Expand an app to see bundled helpers and other components NetBlocker can associate confidently.
No connection pop-up fatigue
NetBlocker follows your blocked-app list instead of asking for a decision on every destination.
Private by design
Your blocked-app list stays on your Mac, and NetBlocker does not inspect the contents of your traffic.
Installation
Three steps from download to control.
Drag to Applications
Open the DMG and move NetBlocker into the Applications folder.
Approve once
Allow the Network Extension in macOS System Settings when prompted.
Drop in an app
Turn on protection and drag the app you want to keep offline into NetBlocker.
Safe download
Signed, notarized, and served over HTTPS.
Apple has notarized both the app and its disk image. macOS Gatekeeper can verify the public release before it opens.
Read about security and privacy →SHA-256 · NetBlocker 1.1.4
910c6be37603e31d70307d8d7390ebb81a24685cc5033b4c766161a794769350Use this checksum to confirm that the downloaded DMG matches the published release.Practical guides
Start with the exact problem you want to solve.
Clear instructions and comparisons before you install anything.
Block one Mac app
Keep one selected app offline without turning off Wi-Fi for everything else.
Block Microsoft Teams
Understand desktop-app rules, cached messages, related processes, and Teams for Web.
Stop an app phoning home
Block new connections and verify the result without making claims the traffic cannot prove.
Compare outbound firewalls
Choose between NetBlocker, LuLu, Radio Silence, and Little Snitch by workflow.
Before you download
Common questions.
Is NetBlocker free to download?
Yes. The download includes a seven-day trial with every feature available and no payment card required. A lifetime license costs €4.99 after the trial.
Can I get a refund after buying NetBlocker?
Yes. The lifetime license includes a 30-day money-back guarantee measured from the original purchase date.
Can NetBlocker block internet access for only one Mac app?
Yes. Add the selected app to NetBlocker and the rest of your Mac can remain online. Quit and reopen the blocked app once so existing connections are closed.
Does the firewall built into macOS do the same thing?
The firewall included with macOS primarily controls incoming connections. NetBlocker is designed to control new outgoing connections from selected apps.
Does the download support Intel Macs?
No. NetBlocker is built exclusively for Apple silicon Macs, including M1 and newer, running macOS 13 Ventura or later.
Keep one app offline. Keep the rest of your Mac online.
Try every feature for seven days. Buy once for €4.99, backed by a 30-day money-back guarantee.
Read the refund policy