Radio Silence is the simplest way to stop specific Mac apps from going online: no pop-ups, one click per app, $9. Its network monitor lists live connections, which is enough to find an app to block. If you want more than a list — bytes per app, a map of destinations, listening ports and the domain names your apps look up — LightAtom goes deeper on visibility, but doesn't block.
Who this is for
- You want to understand traffic before deciding what (if anything) to block.
- You'd like a map and per-app data volumes, not just a list of current connections.
- You use Radio Silence for blocking and want a richer view alongside it.
Comparison
| LightAtom | Radio Silence | |
|---|---|---|
| Price | Not announced yet | $9 |
| Platforms | macOS | macOS |
| Blocks connections | No | Yes |
| Per-app bytes / live rate | Yes | Not listed |
| Map view | Yes | Not listed |
| Open ports view | Yes | Not listed |
| DNS / domain names | Yes | Not listed |
| Open source | Not listed | Not listed |
| macOS support | macOS 14 or later | macOS 10.15 or later |
| Last checked | 24 Oct 2026 | 24 Oct 2026 |
When to stay with Radio Silence
Stay with Radio Silence if all you need is to cut specific apps off from the network quietly. It's inexpensive, unobtrusive and does that one job well.
How to switch
- Keep Radio Silence for the apps you block; LightAtom works alongside it.
- Install LightAtom and review the connections view to decide whether more apps deserve blocking.
Frequently asked questions
How much does Radio Silence cost?
$9, with a free trial and a 30-day money-back guarantee, according to its website.
Does Radio Silence show alerts?
No. It's deliberately silent: you choose apps to block in its window, and there are no pop-ups.
Can Radio Silence monitor network traffic?
It has a network monitor showing live connections, including background processes. It doesn't focus on data totals or maps.
Does LightAtom replace Radio Silence?
Only if you don't need blocking. LightAtom shows traffic; it doesn't stop it.