One tap tells you what this Wi-Fi blocks.
Your VPN, your calls, your apps. RoamGauge sends real protocol-shaped handshakes, so a green mark means it actually works on the network you are standing on. Nothing tunneled, no account, no analytics.
On Google Play now. The iPhone version is coming to the App Store; ask for a TestFlight invite to try it first.
Connected is not the same as working
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The sign-in page you never saw
A captive portal that swallows everything except a browser, while the Wi-Fi icon says you are connected.
RoamGauge names which one, and what to do about it.
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The port that quietly drops your VPN
UDP 443, 51820 and 1194 blocked while the web still loads.
RoamGauge names which one, and what to do about it.
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The DNS that is not yours
Answers rewritten or filtered by the network before they reach you.
RoamGauge names which one, and what to do about it.
What it checks
- Whether your VPN will connect: real WireGuard, OpenVPN, IKEv2 and Tailscale handshakes, not just a port scan
- Whether DNS is being filtered, intercepted or rewritten
- Whether you are really online, or stuck behind a sign-in page
- Whether calling and streaming apps can be reached, and whether the problem is the network or the service itself
- Your own checks: add an office portal, a home server or a NAS
- NAT type and IPv6, for hosting, gaming and peer-to-peer calls
- Speed, latency, jitter and packet loss, when you want the numbers too
It answers with an action
“Take the call on your hotspot” is useful. “UDP 443 is blocked” is the reason underneath it. RoamGauge leads with the first and keeps the second one tap away.
Rejoin a network and it tells you that you have been here before, and how it went.
Copy a plain-text summary of what the connection can and cannot do, and paste it into a message. Setting up a kid at school or a parent at home? Run it on their phone and send yourself the result. RoamGauge is built for the person who has to make it work from three states away.
Free and Paid
| Feature | Free | Paid |
|---|---|---|
| The one-tap check, every network | Included | Included |
| History | last 3 networks | unlimited, with trends |
| VPN servers tested with your own keys | 2 | unlimited, in parallel |
| Your own checks (office VPN, NAS, Plex) | 2 | unlimited |
| Streaming services per scan | 5 | every one you switch on |
| Retry WireGuard on the ports people switch to | Not included | Included |
| Public-IP lookups | 3 a day | unlimited |
Honest by design
RoamGauge is a diagnostic tool, not a VPN. It sends real protocol-shaped handshakes so a green mark means the thing genuinely works here. It never tunnels your traffic and never establishes a VPN connection.
There are no accounts and no analytics. Your history stays on your phone and you can delete all of it in one tap. You can optionally contribute an anonymous result from a public venue to help map how hotel and airport Wi-Fi behaves. That is off until you turn it on, and the result carries no identifier of any kind, so it cannot be traced back to you.
Guides
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Hotel Wi-Fi is blocking your VPN — here is how to tell why
Hotel and airport Wi-Fi blocks VPNs in four different ways, and each one has a different fix. How to work out which one you are hitting, in order, without guessing.
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Wi-Fi says connected, but nothing loads
Connected to Wi-Fi with no internet is four different faults wearing the same symptom. How to tell a captive portal from DNS interception from a broken IPv6 route, and fix each one.
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Which port to use when your VPN is blocked
443, 53, 4500 or 1194 — which port actually gets a VPN out of a restrictive network, why, and how to change it on WireGuard, OpenVPN and IKEv2.