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Radio Silence vs Intego Mac Internet Security: catalog facts
Radio Silence	Intego Mac Internet Security
Paid One-time price of $9 with a free trial and a 30-day money-back guarantee.	Paid Paid subscription with a 30-day money-back guarantee.
macOS	macOS
Blocks an app with a single click Shows background helpers and daemons that make connections	Built specifically for macOS Firewall can block apps from connecting without permission
macOS only Does not prompt about new connections, so blocking is manual	Paid subscription only Mac-focused; not for other platforms
Downloadable app	Downloadable app
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.