NetBlockerDownload

Compatibility

Made for modern Apple silicon Macs.

Check the requirements and practical limits before you install. The seven-day trial lets you verify your own workflow without a card.

Apple siliconM1 or newer. Native arm64 build.
macOS 13+Ventura or a newer macOS release.
Network ExtensionOne approval in System Settings.
7-day trialTest your own apps before buying.

Designed to work with

NetBlocker focuses on outbound connections created by signed macOS applications and their confidently associated components.

  • Native Mac apps
    Conventional signed applications installed in Applications or another local folder.
  • Electron and multi-process apps
    Apps that use several related components can be shown together when their relationship is clear.
  • Bundled helpers and services
    Components belonging to an app can be covered without requiring a separate rule for every connection.
  • Background activity
    Related processes observed making connections can appear under the blocked app.

Not currently supported

  • ×
    Intel Macs
  • ×
    iPhone, iPad, Windows, or Android
  • ×
    Inbound firewall rules or per-domain rules
  • ×
    Remote management of another Mac

Good to know

Real-world limitations, stated plainly.

Network tools sit close to the operating system. These details help you get predictable results.

Existing connections may remain open

NetBlocker blocks new connections. Quit and reopen an app after adding it so connections that already existed are closed.

Shared components require care

Some apps rely on general-purpose runtimes or services shared with other software. NetBlocker only groups related components when the association is sufficiently reliable.

Other network tools can interact

VPNs, corporate security products, content filters, and other firewalls may change network behaviour. Test NetBlocker with your normal setup.

The trial is the compatibility check

Every feature is available during the trial. Confirm that the apps and network tools you depend on behave as expected before purchasing.

Ready to test your setup?

Install the signed and notarized build, follow the guided setup, and try every feature free for seven days.