Simple blocker vs full privacy tool
Radio Silence (by Objective Development competitor) is a lightweight Mac firewall that blocks outgoing connections for selected apps. It's simple and focused — an on/off switch per app. NetMute goes further: per-app firewall rules, real-time traffic monitoring, tracker detection with 624+ known trackers, privacy scoring per app, network profiles, and data limits. Radio Silence is a blocker. NetMute is a privacy control center.
Feature differences in detail
Radio Silence is deliberately minimal: you add apps to a block list, and they lose internet access. That's it. No traffic monitoring, no tracker detection, no privacy scoring, no network profiles. NetMute does all of that. It shows you which domains each app contacts, assigns privacy scores, blocks 624+ known trackers automatically, and lets you set different rules for different networks. If you want a kill switch for specific apps, Radio Silence works. If you want to understand and control your Mac's entire network behavior, NetMute is the more complete tool.
Price comparison
Radio Silence costs $9 (about €9) as a one-time purchase from the developer's website. NetMute costs €9.99 as a one-time purchase from the Mac App Store. Nearly the same price point, but NetMute includes tracker detection, privacy scoring, traffic monitoring, network profiles, data limits, and Focus Sync — features Radio Silence simply doesn't have. NetMute also benefits from the Mac App Store: automatic updates, Apple review, and family sharing for up to 5 family members.
Which should you choose?
Radio Silence is a solid choice if you only need to block a handful of apps from accessing the internet and want the simplest possible interface. But at nearly the same price, NetMute gives you significantly more: tracker detection, privacy scores, traffic monitoring, network profiles, and data limits. For most users who care about privacy — not just blocking — NetMute offers substantially more value for essentially the same cost.