Radio Silence

Paid#72 of 76 in Firewall Software

Radio Silence: Low-cost outbound app blocking for Mac users who want simple controls. Ranked #72 of 76 in Firewall Software by our editors (3.0/10); pricing: 1-day trial; best for mac users wanting low-cost app blocking.

3.0/10★★☆☆☆Editor score

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At a glance

• Editor score
  3.0 / 10
• Pricing
  1-day trial
• Best for
  Mac users wanting low-cost app blocking
• Free plan
  No
• Paid from
  $9 one-time
• Outbound control
  Basic
• Facts checked
  22 Sep 2026

• Where it wins

  • Blocks selected applications and their child processes from internet access
  • Monitors application and process connections in real time
  • One-time pricing with support for Apple Silicon and Intel Macs

• Where it doesn't

  • Available only for macOS
  • Provides basic outbound-only controls
  • No connection alerts are listed

Our verdict on Radio Silence

Radio Silence is a desktop firewall and network monitor for macOS. It is designed for individual Mac users and teams that want application-level outbound connection blocking without a recurring subscription. Users can maintain a list of applications that cannot access the internet, while the product displays application and process network connections in real time. It supports Apple Silicon and Intel Macs and includes a macOS network extension installer.

Pricing is straightforward across two one-time plans. Personal costs $9 for a single user, allows multiple installs, and is not a subscription. Team costs $49 for an entire team, has no seat limit, and is also not a subscription. The vendor describes a free 24-hour trial and a separate 30-day money-back guarantee. The product runs automatically at Mac startup and remains active when its application window is closed, which suits users who want persistent blocking after initial configuration.

Its standout feature is focused application control: selected apps can be blocked from accessing the internet, and child processes of blocked applications can also be blocked. That focus keeps the product suited to straightforward outbound filtering, but the published controls are basic and outbound-only. Connection monitoring is included, while connection alerts are not listed. Choose Radio Silence if you use a Mac and want inexpensive, persistent app blocking with a one-time purchase. Users who need broader platform coverage or more advanced firewall direction and alert controls should consider another option.

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Radio Silence pricing

All 2 Radio Silence plans and prices →

Radio Silence fact sheet

Alternatives to Radio Silence

• FortiGateA broad hybrid firewall platform for organizations that need deep security and network controls.9.4
• Arista NG FirewallA broad firewall platform with a free plan and extensive network controls.9.3
• Google Cloud NGFWGoogle Cloud-native firewall protection with free rule evaluation and usage-priced advanced controls.9.2

See all Radio Silence alternatives →

Featured on iTechGuides

Radio Silence is listed in our Firewall Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Last updated 7 Oct 2026 · How we research and update