Most questions about NetRadar are answered below. If yours is not, email me and I will reply.
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When writing in, it helps to include: your macOS version, the NetRadar version from NetRadar ▸ Settings ▸ About, whether you are on Wi-Fi or Ethernet, and what you expected to see instead.
Almost always this is the Local Network permission. macOS asks for it once, and if it was dismissed or denied the app cannot reach anything — there is no way for an app to detect this or ask again, which is why NetRadar has to guess and tell you.
If NetRadar is not listed there at all, it has not asked yet. Run a scan once, allow the prompt when it appears, then scan again.
A device can be present and still not answer. Three common reasons:
NetRadar reads hardware addresses from your Mac's own neighbour table, which only holds devices reachable on the same network segment. On a routed or isolated network — some office setups, guest networks, and most virtual machines — those addresses simply are not available, and no app can show them.
The device is still found and still identified; NetRadar leans on its Bonjour name, the services it advertises and its open ports instead. Rows without a hardware address are complete, not broken.
Separately, iPhones, iPads and Macs randomise their hardware address for privacy. A randomised address has no registered manufacturer, so NetRadar shows none rather than inventing one.
Not every device announces a name. When none is available, NetRadar falls back to the manufacturer and the last part of the address, and finally to the address itself. With NetRadar Pro you can name any device yourself, and that name is remembered on every future scan of that network.
NetRadar does not offer these, and will not. Both need packet capture, which macOS does not permit to apps distributed through the App Store. Rather than ship something half-working, they are left out. What is available instead is your router's own throughput figures, read over UPnP or SNMP, under the network details.
NetRadar Pro is one payment covering every Mac signed in to the same Apple Account. On a new Mac, open Settings ▸ About ▸ Restore Purchase.
NetRadar is waiting on the App Store. Check your internet connection and try again in a moment. If you have already paid, your unlock is remembered locally and Pro features keep working even while the App Store is unreachable.
Refunds are handled by Apple, not by us. Request one at reportaproblem.apple.com.
Crash reports are genuinely useful, and they are not sent automatically — NetRadar has no crash reporter. If the app quits unexpectedly, macOS keeps a report you can attach:
NetRadar