Public WiFi Safety Scan

Stay secure on public WiFi networks everywhere you go. Whether you’re in a café, hotel, airport, or coworking space, SentryFi lets you quickly test network safety and understand the risks before you trust a connection.
How it works
Tap Start Scan to analyze your current WiFi.
Within seconds, receive a clear 0-100 Safety Score that shows how safe your network is.
View the Reasons and Suggestions list to see why your score was given and what to do next (e.g., “avoid banking on this WiFi,” “switch to mobile data,” “rescan after login”).
Why users choose SentryFi
• One-tap public Wi-Fi scan for safety and speed.
• Instant 0-100 risk score you can understand.
• Detects hidden risks like login portals, DNS redirects, or tampering.
• Real-time security tips and next steps.
• Runs 100% on-device – no accounts required, no tracking, no personal data stored.
Designed for travelers and remote workers
SentryFi is built for people who often connect to public WiFi in the US, UK and Canada. It helps you avoid unsafe networks and protect your privacy anywhere you go.
Privacy first
SentryFi does not collect or transmit any personal information. All analysis is performed locally on your device. Advertising data may be collected by AdMob to serve non-personalized ads.
Download SentryFi now and scan before you connect.
Stay safe on public WiFi anywhere you go.