Public WiFi Security Scanner

Is this WiFi safe? SentryFi is a WiFi security scanner for hotel, airport, café and home networks. In about 60 seconds you get a WiFi security score from 0 to 100, the reasons behind it and what to do next. Then the network scanner answers the other big question: who is on my WiFi?

WIFI SECURITY SCORE IN ABOUT 60 SECONDS
Watch every check finish, one by one:
• Open or locked network, and how it is encrypted
• Captive portal: where the WiFi login page comes from and whether it uses HTTPS
• DNS check: does this network answer the same as trusted encrypted DNS?
• Certificates and unchanged pages: signs of an HTTPS downgrade or a hidden proxy
• 50 popular sites tested, to reveal hotel, school or work filters
One clear score, the reason for every point lost and plain next steps. No jargon.

WHO IS ON MY WIFI? NETWORK SCANNER FOR CONNECTED DEVICES
Wondering who is using your WiFi at home, or who else shares the hotel network? The SentryFi WiFi scanner lists the devices on your WiFi by type: phones, computers, TVs, printers, speakers and smart-home devices, and tells you whether other devices on this WiFi can reach your phone. With Pro it works as an IP scanner too: each device's name, IP and model (when recognized), and you can mark them as Mine, Known or Unknown, so a stranger stands out. A simple WiFi detector for the moment you think someone is stealing your WiFi.
Home alerts with Pro: get a notification when a new device joins your home WiFi.

PUBLIC WIFI SECURITY: HOTEL, AIRPORT, CAFÉ
Tips for the place you are in, and what this network can and can't see about you. If a network you checked before comes back with different DNS, encryption or login page, SentryFi tells you. It could be the venue, or a copycat network.
A reminder when you join a WiFi you haven't checked yet. Home and work can be marked trusted and stay quiet.

MOBILE DATA & TRAVEL eSIM
Not on WiFi? Check your SIM or eSIM line too: the country your traffic exits in, carrier tracking headers and blocked sites. Handy abroad, where many travel eSIMs route data through another country.

BASIC AND PRO
Without a subscription: the WiFi security check, the score and the connected devices by type. The full report opens with Pro, or after a short video ad.
SentryFi Pro (yearly):
• Full report with every finding and next steps, shareable as PDF
• Device names, IP and model (when recognized) in the network scanner
• Unlimited history and a 90-day line log
• No ads
• Auto-check: new WiFi is checked in the background, with a notification
Pro is one yearly plan. It renews automatically until you cancel in Google Play.

PRIVATE BY DESIGN
SentryFi is not a VPN and doesn't change your connection; it shows whether your VPN is on. No account, no sign-up, and we never ask for your WiFi password. Your history stays on your phone. Results are risk signals, not a guarantee.

The basic version shows ads (Google AdMob); Pro has none.
Privacy policy: https://srofia.com/sentryfi-privacy

Recent changes:
• Made for tablets: two-column reports in landscape.
• Home now shows this network's last check on Wi-Fi you already know.
• Stability fixes.