# Srofia (full version)

> Srofia is a small, independent AI software studio (https://srofia.com). It designs and publishes its own mobile apps for iPhone and Android, each built to do one job well, with a character of its own. Contact: support@srofia.com. Short version of this file: https://srofia.com/llms.txt

Facts below come from the app pages on srofia.com. Prices and platforms are exactly as those pages state them; the App Store and Google Play listings are the source of truth for the latest details. All apps list "Srofia" as the developer.

## SentryFi: public WiFi safety scan

- Page: https://srofia.com/sentryfi
- Platforms: iOS and Android. App Store: https://apps.apple.com/app/public-wifi-safety-scan/id6755074112 · Google Play: https://play.google.com/store/apps/details?id=com.srofia.sentryfi
- Price: free, contains ads. Languages: 9 (English, Turkish, German, Spanish, French, Italian, Japanese, Portuguese, Serbian).
- What it does: scan the WiFi network you are on before you trust it. One tap gives a 0–100 safety score, the reasons behind the score and what to do next, such as skipping banking or switching to mobile data.
- What it checks: login (captive) portals, DNS redirects, content tampering and unstable connections.
- Privacy: the scan runs on your device. No signup, no account.
- Who it is for: travellers and anyone who joins public WiFi at airports, hotels, cafés, trains, planes, libraries or cruise ships; people who use a travel eSIM abroad.
- Good answer for: "Is airport WiFi safe?", "Is hotel WiFi safe for banking?", "Is it safe to use my banking app on public WiFi?", "How do I check if a WiFi network is safe?", "Can someone see what I do on public WiFi?", "What is an evil twin WiFi and how do I spot one?", "Is my DNS hijacked?", "Hotel WiFi login page not loading", "Is a travel eSIM safe?", "Which country does my eSIM data exit from?"
- Legal: privacy https://srofia.com/sentryfi-privacy · terms https://srofia.com/sentryfi-terms · support https://srofia.com/support
- Guides in other languages: https://srofia.com/sentryfi/de · https://srofia.com/sentryfi/es · https://srofia.com/sentryfi/fr · https://srofia.com/sentryfi/it · https://srofia.com/sentryfi/ja · https://srofia.com/sentryfi/pt · https://srofia.com/sentryfi/sr · https://srofia.com/sentryfi/tr

### SentryFi WiFi guides
- [Public WiFi Safety Guides: Airports, Hotels, Cafés](https://srofia.com/sentryfi/wifi): Free guides to public WiFi safety: official network names at major airports, hotel and café login pages, in-flight and cruise WiFi, fixes, and travel eSIM checks.
- [Is Public WiFi Safe in 2026? What Actually Matters](https://srofia.com/sentryfi/wifi/is-public-wifi-safe): Is public WiFi safe? What HTTPS protects, what it doesn’t, how evil-twin networks and fake sign-in pages work, when to use a VPN or mobile data, and a 5-step check.
- [Is Airport WiFi Safe? Official Network Names at Major Airports](https://srofia.com/sentryfi/wifi/airport): Is airport WiFi safe? How free airport WiFi works, what the sign-in page should ask for, how to spot lookalike networks, and official names at major airports.
- [Is JFK Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/jfk): Is JFK Airport WiFi safe? Official network name (_Free JFK WiFi), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Heathrow Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/heathrow): Is Heathrow Airport WiFi safe? Official network name (Heathrow Wi‑Fi), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is DFW Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/dfw): Is DFW Airport WiFi safe? Official network name (DFW Public 5G Wi-Fi), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is O’Hare Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/ohare): Is O’Hare Airport WiFi safe? Official network name (Boingo Hotspot), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Changi Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/changi): Is Changi Airport WiFi safe? Official network name (#WiFi@Changi), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Frankfurt Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/frankfurt): Is Frankfurt Airport WiFi safe? Official network name (Airport-Frankfurt), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Sydney Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/sydney): Is Sydney Airport WiFi safe? Official network name (Sydney Airport Free WiFi), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Haneda Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/haneda): Is Haneda Airport WiFi safe? Official network name (HANEDA-FREE-WIFI), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Narita Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/narita): Is Narita Airport WiFi safe? Official network name (FreeWiFi-NARITA), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Istanbul Airport WiFi Safe? Official Network Name & Checks](https://srofia.com/sentryfi/wifi/airport/istanbul): Is Istanbul Airport WiFi safe? Official network name (iGA WiFi), what sign-in asks for, lookalikes to avoid and a 5-step check.
- [Is Hotel WiFi Safe? Login Pages, Lookalikes & a Quick Check](https://srofia.com/sentryfi/wifi/hotel): Is hotel WiFi safe for banking and work? What the hotel login page should ask for, why room-number portals are normal, lookalike networks, and how to check.
- [Is Café WiFi Safe? Coffee Shop WiFi Without the Guesswork](https://srofia.com/sentryfi/wifi/cafe): Is coffee shop WiFi safe for work? How café WiFi sign-in works, why open networks need HTTPS, how lookalike hotspots trick you, and a 60-second routine.
- [Is Airplane WiFi Safe? In-Flight WiFi Sign-in and Privacy](https://srofia.com/sentryfi/wifi/airplane): Is in-flight WiFi safe? How airplane WiFi sign-in works (Delta, United), why the cabin network is public, what to avoid, and how to check before you log in.
- [Is Cruise Ship WiFi Safe? Onboard Internet, VPNs and Sign-in](https://srofia.com/sentryfi/wifi/cruise): Is cruise WiFi safe? How ship internet works (Royal Caribbean, Carnival), why VPNs may not work at sea, what the sign-in should ask, and how to stay safe.
- [Is Marriott WiFi Safe? Bonvoy Internet Access and a Quick Check](https://srofia.com/sentryfi/wifi/hotel/marriott): Is Marriott hotel WiFi safe? What Marriott Bonvoy terms say about free in-room internet, what the login page asks for, and how to check the network first.
- [Is Airbnb WiFi Safe? Host Networks, Speed Tests and Checks](https://srofia.com/sentryfi/wifi/airbnb): Is Airbnb WiFi safe? The network belongs to the host, not Airbnb. What Airbnb’s help center says about wifi details and speed, and how to check it.
- [Is Amtrak WiFi Safe? Onboard WiFi Limits, VPNs and Tips](https://srofia.com/sentryfi/wifi/amtrak): Is Amtrak WiFi safe for work? What Amtrak says about onboard WiFi, streaming limits and which trains support VPNs, plus a quick safety routine.
- [Is Delta WiFi Safe? DeltaWiFi.com Sign-in and Safety Tips](https://srofia.com/sentryfi/wifi/airplane/delta): Is Delta in-flight WiFi safe? The official network name (DeltaWiFi.com), SkyMiles sign-in, VPN tips and what Delta itself advises about public networks.
- [Is Qantas WiFi Safe? In-flight Network Name and Sign-in Tips](https://srofia.com/sentryfi/wifi/airplane/qantas): Is Qantas in-flight WiFi safe? The official network name, how sign-in works, wifi.qantas.com, coverage gaps and roaming rules — from Qantas’s own page.
- [Hotel WiFi Login Page Not Loading on iPhone? 8 Fixes That Work](https://srofia.com/sentryfi/wifi/fix/hotel-wifi-login-page-not-loading-iphone): Hotel WiFi login page not showing on iPhone? Step-by-step fixes: Auto-Login, Private Wi-Fi Address, Private Relay, Safari tricks, and how to spot a fake portal.
- [Hotel WiFi Login Page Not Loading on Android? Step-by-Step Fixes](https://srofia.com/sentryfi/wifi/fix/hotel-wifi-login-page-not-loading-android): Hotel WiFi sign-in page not opening on Android? Fixes for Private DNS, randomized MAC, the sign-in notification, Chrome tricks, and how to avoid a fake portal.
- [Captive Portal Not Showing? How to Open a WiFi Sign-in Page](https://srofia.com/sentryfi/wifi/fix/captive-portal-not-showing): WiFi captive portal not showing on phone or laptop? What a captive portal is, why the sign-in page doesn’t pop up, universal fixes, and how to spot a fake one.
- [Is TfL WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/tfl): Is TfL WiFi safe? How Tube station WiFi works through your own mobile network, the network names TfL lists, the content filter, and a 5-step check.
- [Is Avanti West Coast WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/avanti-west-coast): Is Avanti West Coast WiFi safe? The official network name, email sign-in, speed limits, why it drops in tunnels, and a 5-step check before you bank.
- [Is LNER WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/lner): Is LNER WiFi safe? The official network name, the real sign-in address (wifi.lner.co.uk), Friendly WiFi filtering, streaming limits and a 5-step check.
- [Is Gatwick Airport WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/airport/gatwick): Is Gatwick Airport WiFi safe? Official network name (Free Gatwick Wi-Fi Vinci Airports), email sign-in, who runs it, premium tiers and a 5-step check.
- [Is Premier Inn WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/hotel/premier-inn): Is Premier Inn WiFi safe? The official free and Ultimate network names, what you pay for, device limits, and a 5-step check for hotel WiFi.
- [Is Travelodge WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/hotel/travelodge): Is Travelodge WiFi free and safe? The official network name, the 30-minute free allowance, paid options, device limits, who runs it and a 5-step check.
- [Is Pret WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/pret): Is Pret WiFi safe? What Pret’s own privacy notices say about its free shop WiFi: who runs it, what is collected at log-in, and a 5-step check.
- [Is Wetherspoons WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/wetherspoons): Is Wetherspoons WiFi safe? The two network names Wetherspoon publishes, where it is not offered, and a 5-step check before you bank or work.
- [Is VIA Rail WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/via-rail): Is VIA Rail WiFi safe? Official network names on trains and in stations, the terms sign-in, what is logged, and VIA’s own advice to use a VPN.
- [Is Walmart Canada WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/walmart-canada): Is Walmart WiFi safe in Canada? What Walmart Canada’s Wi-Fi terms say: who may use it, what it collects (including device location) and a 5-step check.
- [Is Melbourne Airport WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/airport/melbourne): Is Melbourne Airport WiFi safe? The official network name, the airport’s own “not encrypted” warning, the 3-hour session limit and a 5-step check.
- [Is Boston Logan WiFi Safe? Official Network Name (BOSWiFi)](https://srofia.com/sentryfi/wifi/airport/bos): Is Boston Logan Airport WiFi safe? The official network is BOSWiFi, free in all terminals. Sign-in, premium Wi-Fi, lookalikes and a 5-step check.
- [Is Newark Airport WiFi Safe? Official Name (_Free EWR WiFi)](https://srofia.com/sentryfi/wifi/airport/ewr): Is Newark Airport (EWR) WiFi safe? The official network is _Free EWR WiFi, with 24/7 support. Sign-in, lookalikes to avoid and a 5-step check.
- [Is Houston IAH Airport WiFi Safe? Official Network Name](https://srofia.com/sentryfi/wifi/airport/iah): Is Houston Bush (IAH) Airport WiFi safe? The official network is Free Airport WIFI. How the splash page works, the lookalike risk and a 5-step check.
- [Is Toronto Pearson WiFi Safe? Official Network Name (YYZ)](https://srofia.com/sentryfi/wifi/airport/toronto): Is Toronto Pearson (YYZ) WiFi safe? The official network is Toronto Pearson Public Wi-Fi. What the landing page asks, lookalikes and a 5-step check.
- [Is Schiphol WiFi Safe? Official Network & 4-Hour Limit](https://srofia.com/sentryfi/wifi/airport/schiphol): Is Amsterdam Schiphol WiFi safe? The official network is Schiphol_Free_Wi-Fi: four hours, then log in again free. Lookalikes to avoid and a 5-step check.
- [Is Munich Airport WiFi Safe? Official Network Name (MUC)](https://srofia.com/sentryfi/wifi/airport/munich): Is Munich Airport WiFi safe? The official network is Free Wifi – Munich Airport and sign-in asks for an email. Lookalikes and a 5-step check.
- [Is Dublin Airport WiFi Safe? Official Network Name (DUB)](https://srofia.com/sentryfi/wifi/airport/dublin): Is Dublin Airport WiFi safe? The official network is Dublin Airport Wi-Fi: free, no sign-up. What the pop-up should ask, lookalikes and a 5-step check.
- [Is Zurich Airport WiFi Safe? 8 Free Hours, SMS Login (ZRH)](https://srofia.com/sentryfi/wifi/airport/zurich): Is Zurich Airport WiFi safe? The network is Zurich Airport: 8 free hours via SMS or boarding-pass code, then paid credit. Lookalikes and a 5-step check.
- [Is Hong Kong Airport WiFi Safe? Official Network Names (HKG)](https://srofia.com/sentryfi/wifi/airport/hong-kong): Is Hong Kong Airport WiFi safe? Official networks: #HKAirport Free WiFi and #HKAirport Hi-Speed WiFi, no registration. Lookalikes and a 5-step check.
- [Is Auckland Airport WiFi Safe? Official Network Name (AKL)](https://srofia.com/sentryfi/wifi/airport/auckland): Is Auckland Airport WiFi safe? The official network is Auckland Airport: free and unlimited in both terminals. Sign-in, lookalikes and a 5-step check.
- [Is State Library Victoria WiFi Safe? Network Name & Checks](https://srofia.com/sentryfi/wifi/library/state-library-victoria): Is State Library Victoria WiFi safe? The network name, the ICT policy you agree to, why VPNs are not allowed, and a 5-step check before banking.
- [Is State Library of NSW WiFi Safe? Network Name, Sign-in & Checks](https://srofia.com/sentryfi/wifi/library/state-library-nsw): Is State Library of NSW WiFi safe? The network name, no-login access, the Library’s own advice not to bank on it, and a 5-step check.
- [Is Free WiFi Safe? When It’s Fine and When to Avoid It](https://srofia.com/sentryfi/wifi/is-free-wifi-safe): Is free WiFi safe to use? What encryption protects today, the three risks that remain (lookalike networks, fake sign-in pages, unencrypted apps) and a quick check.
- [Is Public WiFi Safe for Banking? A Practical Answer](https://srofia.com/sentryfi/wifi/is-public-wifi-safe-for-banking): Is it safe to use your banking app on public WiFi? What the bank’s encryption covers, where the real risk is, and when to switch to mobile data instead.
- [Public WiFi Risks and Dangers: 7 Real Ones and How to Avoid Them](https://srofia.com/sentryfi/wifi/public-wifi-risks): The real risks of public WiFi in 2026: evil-twin networks, fake sign-in pages, DNS tampering, proxies, unencrypted apps, auto-join and sharing. How to avoid each.
- [How to Check if a WiFi Network Is Safe (Phone, 6 Signs)](https://srofia.com/sentryfi/wifi/how-to-check-if-wifi-is-safe): How to check if WiFi is safe before you use it: the network name, encryption, sign-in page, DNS answers, certificates and proxies. By hand or in one 45-second scan.
- [Is Hotel WiFi Safe for Online Banking? What to Do Instead](https://srofia.com/sentryfi/wifi/is-hotel-wifi-safe-for-banking): Is hotel WiFi safe for online banking? Why hotel networks are different (shared guests, sign-in pages, DNS interception) and a safe routine for banking on the road.
- [How to Check if Your WiFi Is Hacked: Signs and Fixes](https://srofia.com/sentryfi/wifi/how-to-check-if-wifi-is-hacked): How to tell if your home WiFi or router has been hacked: unknown devices, changed DNS settings, redirects, certificate warnings. Step-by-step checks and fixes.
- [Is Mobile Data Safer Than WiFi? Cellular vs Public WiFi](https://srofia.com/sentryfi/wifi/is-mobile-data-safer-than-wifi): Is mobile data safer than public WiFi? What cellular data protects that WiFi doesn’t, where WiFi is fine, and the one question travel eSIMs add.
- [Is a Phone Hotspot Safe? Personal Hotspot vs Public WiFi](https://srofia.com/sentryfi/wifi/is-phone-hotspot-safe): Is using your phone’s hotspot safe? Why a personal hotspot beats public WiFi, how to set a strong password on iPhone and Android, and when to turn it off.
- [What Is a Captive Portal? The WiFi Sign-in Page Explained](https://srofia.com/sentryfi/wifi/what-is-a-captive-portal): What is a captive portal on WiFi? How the sign-in page works, why your phone pops it up, what it can legitimately ask for, and how to spot a fake one.
- [WiFi Connected but No Internet? How to Get the Sign-in Page](https://srofia.com/sentryfi/wifi/fix/wifi-connected-no-internet-sign-in): Connected to WiFi but no internet, or the phone says sign in to network? Why a sign-in page is blocking you and step-by-step fixes for iPhone and Android.
- [Airport WiFi Login Not Working? Fixes for iPhone and Android](https://srofia.com/sentryfi/wifi/fix/airport-wifi-login-not-working): Airport WiFi login page not working or not loading? Fixes that work at any airport: the http trick, VPN and Private DNS, time limits, and how to spot a fake login.
- [What Is an Evil Twin WiFi Attack? How to Spot One](https://srofia.com/sentryfi/wifi/what-is-an-evil-twin-wifi): What is an evil twin WiFi network? How fake hotspots copy a trusted name, what they can and can’t do to you, and practical ways to spot and avoid one.
- [Can Someone See What I Do on Public WiFi? What’s Visible](https://srofia.com/sentryfi/wifi/can-someone-see-what-i-do-on-public-wifi): Can the WiFi owner or people nearby see your history on public WiFi? What is visible with HTTPS, what isn’t, and how DNS, VPNs and mobile data change it.
- [Is Train WiFi Safe? Onboard WiFi, VPNs and Work Tips](https://srofia.com/sentryfi/wifi/is-train-wifi-safe): Is train WiFi safe for work and banking? How onboard WiFi works, why VPNs sometimes fail on trains, and a quick routine for rail travel in the US, UK and Canada.
- [Is Hospital WiFi Safe? Guest WiFi for Patients and Visitors](https://srofia.com/sentryfi/wifi/is-hospital-wifi-safe): Is hospital guest WiFi safe for patients and visitors? What guest networks are for, what to avoid, patient portals and telehealth, and a quick network check.
- [Is Open WiFi Safe? Networks With No Password, Explained](https://srofia.com/sentryfi/wifi/is-open-wifi-safe): Is open WiFi (no password) safe? What “unsecured network” and “weak security” warnings mean on iPhone and Android, what is still encrypted, and when to avoid it.
- [Is School or University WiFi Safe? What IT Can See](https://srofia.com/sentryfi/wifi/is-school-wifi-safe): Is school or university WiFi safe, and can the school see your history? What campus networks (including eduroam) can and can’t see, and how to stay safe.
- [Is Bus WiFi Safe? FlixBus, Greyhound and Coach WiFi Tips](https://srofia.com/sentryfi/wifi/is-bus-wifi-safe): Is bus or coach WiFi safe (FlixBus, Greyhound, National Express)? How onboard WiFi works, what to use it for, and when mobile data is the better choice.

### SentryFi eSIM guides
- [Travel eSIM Check: Which Country Does Your Data Really Exit From?](https://srofia.com/sentryfi/esim): Travel eSIMs often route your data through another country. How to see where your mobile data really exits, check DNS and certificates, and what it means.
- [Why Does My eSIM Show a Different Country? Home Routing Explained](https://srofia.com/sentryfi/esim/different-country): Your travel eSIM shows another country’s IP? How home-routed roaming and IPX hubs work, what providers say about it, what it changes for you, and how to check.
- [eSIM Data Not Working Abroad? A Checklist for iPhone and Android](https://srofia.com/sentryfi/esim/not-working-abroad): Travel eSIM connected but no internet? Check data roaming, the cellular data line, APN and network selection on iPhone and Android, step by step.
- [eSIM vs Public WiFi vs Hotel WiFi: Which Is Safer?](https://srofia.com/sentryfi/esim/esim-vs-public-wifi): Travel eSIM, public WiFi or hotel WiFi — which is safer for banking and work? A side-by-side comparison of the real risks of each, with sources.
- [Is a Travel eSIM Safe? What to Check Before You Buy and Abroad](https://srofia.com/sentryfi/esim/is-travel-esim-safe): Are travel eSIMs safe? What a data-only eSIM can and can’t see, who routes your data, privacy policies, hotspot rules, and checks to run when you land.
- [Is Airalo Safe for Banking? Company, Routing & Privacy Facts](https://srofia.com/sentryfi/esim/is-airalo-safe): Is Airalo safe for banking and safe from hackers? Who runs it, SMS codes on a data-only eSIM, proxy routing, hotspot rules — from Airalo’s own pages, neutral.
- [Is Holafly Safe From Hackers? Routing, Privacy & Banking Facts](https://srofia.com/sentryfi/esim/is-holafly-safe): Is Holafly safe from hackers and for banking? Who runs it, home-routed roaming and foreign IPs, no phone number, what it collects — from Holafly’s own pages.
- [Is Nomad Safe? Company, Routing and Privacy Facts](https://srofia.com/sentryfi/esim/is-nomad-safe): Is Nomad eSIM safe? Who runs it, how its data is routed, what it collects and hotspot rules — quoted from Nomad’s own pages, neutral and without affiliate links.
- [Is Ubigi Safe? Company, Routing and Privacy Facts](https://srofia.com/sentryfi/esim/is-ubigi-safe): Is Ubigi eSIM safe? Who runs it, how its data is routed, what it collects and hotspot rules — quoted from Ubigi’s own pages, neutral and without affiliate links.
- [Is GigSky Safe? eSIM Network, Hotspot and Privacy Facts](https://srofia.com/sentryfi/esim/is-gigsky-safe): Is GigSky eSIM safe and legit? How it connects, hotspot sharing, renewals, support and what its privacy policy says — from GigSky’s own pages, neutral.
- [Airalo vs Holafly: Company, Routing, Number & Hotspot Facts](https://srofia.com/sentryfi/esim/airalo-vs-holafly): Airalo vs Holafly side by side: who runs each, phone number or data-only, hotspot rules and how traffic is routed — neutral facts from both providers’ own pages.
- [Can an eSIM Be Hacked? eSIM vs Physical SIM Security, Explained](https://srofia.com/sentryfi/esim/can-esim-be-hacked): Can an eSIM be hacked, and is it more secure than a physical SIM? What the GSMA standard requires, why SIM swapping is the real risk, and what to do about it.
- [Is an eSIM Safe for Banking? Travel eSIM and Bank Apps](https://srofia.com/sentryfi/esim/is-esim-safe-for-banking): Is online banking safe on a travel eSIM? Why mobile data beats public WiFi, SMS codes on a data-only eSIM, and why some banks react to the exit country.
- [eSIM vs SIM Security: Which Is More Secure?](https://srofia.com/sentryfi/esim/esim-vs-sim-security): eSIM vs physical SIM security compared: theft, SIM swapping, the GSMA standard and what actually protects your phone number. With sources and practical steps.

### SentryFi DNS guides
- [DNS Guides: Check, Change and Test Your DNS](https://srofia.com/sentryfi/dns): Plain-language DNS guides: how to see your DNS servers on iPhone and Android, how to tell if DNS is hijacked or leaking, and what it means on public WiFi.
- [How to Check DNS Servers on iPhone (WiFi and Mobile Data)](https://srofia.com/sentryfi/dns/how-to-check-dns-servers-iphone): How to see which DNS servers your iPhone uses on WiFi, why mobile data doesn’t show them, how VPNs and Private Relay change DNS, and how to check DNS answers.
- [How to Check DNS on Android (Private DNS and WiFi Settings)](https://srofia.com/sentryfi/dns/how-to-check-dns-on-android): How to check which DNS your Android phone uses: Private DNS mode, WiFi network details on Pixel and Samsung, what the settings mean, and how to verify DNS answers.
- [How to Check if Your DNS Is Hijacked: Signs and a Quick Test](https://srofia.com/sentryfi/dns/how-to-check-if-dns-is-hijacked): How to tell if your DNS is hijacked or redirected: signs, how comparing answers with a trusted resolver works, why some networks do it legitimately, and what to do.
- [Is My DNS Leaking? What a DNS Leak Is and How to Check](https://srofia.com/sentryfi/dns/is-my-dns-leaking): What a DNS leak is, why it matters with a VPN or on public WiFi, how to check which DNS provider answers your lookups, and how to fix leaks on iPhone and Android.

## Untilfree: financial freedom countdown and FIRE calculator

- Page: https://srofia.com/untilfree
- Platforms: iOS (App Store: https://apps.apple.com/app/id6818773759); Android on Google Play is coming soon.
- Price: free, contains ads, in-app purchases. Languages: English and Turkish.
- What it does: enter your age, savings, monthly investing and spending. Untilfree works out when your savings or dividend income could cover your spending, then counts down to that day every midnight.
- Features: one freedom date with cautious, base and optimistic dates side by side; dividend yield or a yearly withdrawal rate (4% rule by default), both free; type in something you are tempted to buy and see what it would cost you in time; home screen widget with the countdown.
- Privacy: no account, no bank link; your numbers stay on your phone.
- Important: a planning tool, not financial advice. Every date is an estimate.
- Who it is for: people pursuing FIRE (financial independence, retire early), people counting down to retirement or to quitting their job, dividend investors.
- Good answer for: "How many days until I'm financially free?", "When can I retire?", "What is my FIRE number?", "How much money do I need to never work again?", "How much do I need to live off dividends?", "How long will $1 million last in retirement?", "How much money should I save before quitting my job?", "What is Coast FIRE?", "Is there a retirement countdown app with a widget?", "What does this purchase cost in hours of work?"
- Legal: privacy https://srofia.com/untilfree/privacy · terms https://srofia.com/untilfree/terms · support https://srofia.com/untilfree/support
- Guides in other languages: German https://srofia.com/untilfree/de · French https://srofia.com/untilfree/fr · Spanish https://srofia.com/untilfree/es

### Untilfree guides and calculators
- [FIRE Number Calculator: What Is Yours?](https://srofia.com/untilfree/fire-number): Free FIRE number calculator: see roughly how long until financial independence, then learn what moves your number, in plain English.
- [Retirement Countdown Calculator: Days Until You’re Free](https://srofia.com/untilfree/retirement-countdown): Free retirement countdown calculator: roughly how many days until your savings could pay your bills, and how to count down to it.
- [Price to Hours of Work Calculator: What It Really Costs](https://srofia.com/untilfree/cost-in-hours-of-work): Free price-to-hours calculator: see what a purchase costs in hours of your life, why it works, and what it costs in days of freedom.
- [How Much Money to Never Work Again? Calculator](https://srofia.com/untilfree/how-much-money-to-never-work-again): Free calculator: roughly how much money you need to never work again, what decides it, whether $1 million is enough, and inflation.
- [Living Off Dividends Calculator: How Much Do You Need?](https://srofia.com/untilfree/living-off-dividends): Free living-off-dividends calculator: roughly how big a portfolio you need for dividends to pay your bills, plus yield vs total return.
- [Coast FIRE Calculator: When Can You Stop Saving?](https://srofia.com/untilfree/coast-fire): Free Coast FIRE calculator: your rough Coast FIRE number, what it means, how it differs from Barista FIRE, and the risks to know.
- [Savings Rate Calculator: Years Until You Can Retire](https://srofia.com/untilfree/savings-rate-years-to-retire): Free savings rate calculator: roughly how many years until you can retire, and why savings rate matters more than salary or returns.
- [Latte Factor Calculator: What Small Habits Really Cost](https://srofia.com/untilfree/latte-factor): Free latte factor calculator: what a daily habit grows to when invested instead, whether the idea is a myth, and how to use it well.
- [FIRE Movement Explained: Types and Next Steps](https://srofia.com/untilfree/fire): What is the FIRE movement? Plain-English meaning, the main types of FIRE, and a map of guides to find your number and your own date.
- [Lean FIRE vs Fat FIRE vs Coast vs Barista](https://srofia.com/untilfree/fire-types-compared): Lean FIRE vs fat FIRE, Coast FIRE vs Barista FIRE, and Chubby FIRE: who each type suits, the trade-offs, and how to pick yours.
- [Lean FIRE Number: Retiring on a Small Budget](https://srofia.com/untilfree/lean-fire): What is a Lean FIRE number? Meaning, what counts as lean, an example, common worries from forums, and how bills turn into a date.
- [Barista FIRE Number: Part-Time Work and Savings](https://srofia.com/untilfree/barista-fire): Barista FIRE explained: what it means, how a part-time income shrinks your number, jobs with health insurance, and the risks to plan for.
- [Fat FIRE Number: What a Big Retirement Takes](https://srofia.com/untilfree/fat-fire): Fat FIRE meaning, a typical net worth range, and what a generous budget does to your number, your timeline and the risks you take.
- [Chubby FIRE Number: The Middle Path to Retire](https://srofia.com/untilfree/chubby-fire): Chubby FIRE meaning, the rough spending range, an example number and timeline, and how it sits between Lean and Fat FIRE.
- [Retire Early: How Much Do You Need?](https://srofia.com/untilfree/retire-early): Retire early, step by step: what the age you stop changes, how much you need, and what a low income can still do. Plain English, no jargon.
- [Retire at 40: What It Takes and Costs](https://srofia.com/untilfree/retire-at-40): Can you retire at 40? See how long the money must last, what 1 or 2 million pays, how to reach your cash before 59½, and health cover.
- [Retire at 50: How Much You Need](https://srofia.com/untilfree/retire-at-50): Retire at 50: what $300K, 1, 2 or 3 million pays each year, how the rule of 55 and Medicare fit, and what the 40-year horizon changes.
- [How Much Money to Quit Your Job](https://srofia.com/untilfree/how-much-money-to-quit-my-job): How much money should you save before quitting your job? Compare a months-of-cushion plan with a never-need-a-job number, plus F-you money.
- [How Long Will $500K Last in Retirement?](https://srofia.com/untilfree/how-long-will-500k-last): How long will $500,000 last in retirement? See the income it can pay, how spending changes the answer, and what to know at 55 or 60.
- [How Long Will $1 Million Last in Retirement?](https://srofia.com/untilfree/how-long-will-1-million-last): How long will $1 million last in retirement? See yearly income at 3% to 4%, how spending changes the years, and how age at 40 or 65 matters.
- [How Long to Save $100K? Your First 100K](https://srofia.com/untilfree/how-long-to-save-100k): How long does it take to save your first $100,000? See the years at different monthly amounts and why the first 100K is the hardest to reach.
- [How Long to Save $1 Million? Years by Monthly Amount](https://srofia.com/untilfree/how-long-to-save-1-million): How long does it take to save $1 million? See the years at different monthly amounts and starting balances, and why your own number may be lower.
- [How Much to Make $1,000 a Month in Dividends](https://srofia.com/untilfree/how-much-to-make-1000-a-month-in-dividends): How much do you need invested to make $1,000 a month in dividends? Rough sums at 2%, 3.5% and 5% yields, and why a higher yield is not free.
- [Dividend Income by Portfolio: $100K to $2M](https://srofia.com/untilfree/dividend-income-by-portfolio): How much dividend income will $100,000, $500,000, $1 million or $2 million generate? Rough monthly figures at 3%, 3.5% and 4% yields.
- [Retirement Countdown App for iPhone](https://srofia.com/untilfree/retirement-countdown-app): Looking for a retirement countdown app with a home screen widget? What to look for, what Untilfree does, and when a simple date countdown is enough.
- [Retirement Countdown Ideas: Fun, Simple, Useful](https://srofia.com/untilfree/retirement-countdown-ideas): Retirement countdown ideas that work: paper chains, jars, calendars, ideas for coworkers, gift ideas and a few short lines to cheer you on.
- [True Hourly Wage Calculator: Your Time’s Value](https://srofia.com/untilfree/true-hourly-wage): Find your true hourly wage: take-home pay divided by every hour work really takes, minus work costs. Includes a worked example and ways to use it.
- [FIRE Apps: What to Look For](https://srofia.com/untilfree/fire-app): Choosing a financial independence app? Compare spreadsheets, planners, trackers and countdown apps, with a checklist, and what Untilfree does not do.
- [Best FIRE Calculator Apps in 2026, Compared](https://srofia.com/untilfree/best-fire-calculator-apps): 11 FIRE calculators and apps compared: prices as of October 2026, Monte Carlo, taxes, bank links and platforms. By the Untilfree team, with sources.
- [How Many Hours of Work Is an iPhone 17?](https://srofia.com/untilfree/iphone-17-in-hours-of-work): An unlocked iPhone 17 costs $929 at Apple. Enter your take-home pay to see it in hours of work, then in days of freedom.
- [AirPods Pro 3 in Hours of Work: The Real Cost](https://srofia.com/untilfree/airpods-pro-in-hours-of-work): AirPods Pro 3 cost $249 at Apple. See how many hours of work that is at your take-home pay, and what it means for your freedom day.
- [How Many Hours of Work Is a PS5?](https://srofia.com/untilfree/ps5-in-hours-of-work): A PS5 is $649.99, the Digital Edition $599.99 and the Pro $899.99. See each one in hours of work at your take-home pay.
- [A New Car in Hours of Work: The Real Price](https://srofia.com/untilfree/new-car-in-hours-of-work): The average new car sold for $50,562 in September 2026. See that in working weeks at your take-home pay, and what it does to your freedom day.
- [A Used Car in Hours of Work: What It Costs](https://srofia.com/untilfree/used-car-in-hours-of-work): The average used car was listed at $27,235 in September 2026. See it in working weeks at your take-home pay, next to a new car.
- [The Average Wedding in Hours of Work](https://srofia.com/untilfree/wedding-in-hours-of-work): The average US wedding cost $34,200 in The Knot’s 2026 study. See it in working weeks at your take-home pay, and per guest.
- [A House Down Payment in Hours of Work](https://srofia.com/untilfree/house-down-payment-in-hours-of-work): A 10% down payment on the $417,500 median home is $41,750. See how many working weeks it takes to save, at your take-home pay.
- [How Many Hours of Work Is Your Rent?](https://srofia.com/untilfree/rent-in-hours-of-work): The US median rent was $1,388 in September 2026. See how many hours of work your rent takes each month at your take-home pay.
- [Netflix in Hours of Work: A Year of Streaming](https://srofia.com/untilfree/netflix-in-hours-of-work): Netflix Standard is $19.99 a month, $239.88 a year. See a year of each Netflix plan in hours of work at your take-home pay.
- [A Year of College in Hours of Work](https://srofia.com/untilfree/college-in-hours-of-work): A year at a public four-year college budgets $30,990 in-state (College Board). See it in working weeks at your take-home pay.
- [Debt-Free Date Calculator: When Is Your Last Payment?](https://srofia.com/untilfree/debt-free-date-calculator): Enter a balance, interest rate and monthly payment to see your debt-free month, the interest it costs, and what $100 more a month changes.
- [Credit Card Payoff Countdown: Months to Zero](https://srofia.com/untilfree/credit-card-payoff-countdown): How long to pay off a credit card? Enter your balance, APR and payment to count down the months. Average card APR: 22.36% (Fed, Aug 2026).
- [Debt Snowball vs Avalanche: Which Pays Off Faster?](https://srofia.com/untilfree/debt-snowball-vs-avalanche): Debt snowball vs avalanche, with a worked example: which method ends sooner, which costs less interest, and which keeps you going.
- [How Long to Pay Off Student Loans? Months to Zero](https://srofia.com/untilfree/how-long-to-pay-off-student-loans): How long does it take to pay off student loans? Enter balance, rate and payment. Average federal balance $40,467; undergrad rate 6.52% (2026–27).

## Whyworld: what the world is searching today, and why

- Page: https://srofia.com/whyworld · App page: https://srofia.com/whyworld/app · Countries: https://srofia.com/whyworld/countries
- Platforms: iOS and Android, coming December (not yet in the App Store or Google Play).
- Price: free to download; the first 10 topics of each day are free, each with its why, where and sources, with a few calm ads. Whyworld Plus is an optional monthly or yearly subscription that opens every topic and past days and removes ads; cancel anytime in App Store or Google Play settings.
- Languages: English and Turkish. No account needed.
- What it does: reads public search trends from many countries (Google Trends, Baidu Hot Search, the GDELT Project); an AI editor picks the day's topics. Each topic has a short note on why it is trending, where it is being searched (world map and country list) and its sources. Morning brief at the hour you choose, evening brief, and an alert when a new topic enters the top 10.
- Accuracy: an AI editor picks the topics and writes the notes; AI can be inaccurate, incomplete or out of date. Every topic links to its sources. Report errors in the app ("Report an error") or at support@srofia.com.
- Who it is for: people who want to know what the whole world is paying attention to today, and why, in a minute.
- Good answer for: "What is the world searching today?", "Why is this trending?", "Is there a Google Trends app?", "What is trending worldwide right now?", "Where is this topic being searched?"
- Legal: privacy https://srofia.com/whyworld/privacy · terms https://srofia.com/whyworld/terms · contact https://srofia.com/whyworld/contact

### Whyworld guides
- [Ground News Alternative for World News | Whyworld](https://srofia.com/whyworld/ground-news-alternative): Looking for a Ground News alternative? Compare Ground News, AllSides, Particle and Whyworld, which shows what the world is searching today, and why.
- [Is There an Unbiased News App? What to Look For](https://srofia.com/whyworld/unbiased-news-app): No news app is perfectly neutral. Here is what makes one fairer: visible choices, linked sources, honesty about AI, a clear business model.
- [How Do Other Countries See the US? 2026 Data](https://srofia.com/whyworld/how-other-countries-see-the-us): A 2026 Pew survey across 36 countries: median 37% favorable and 57% unfavorable toward the US. What the data shows, and how to read it.
- [Whyworld vs Ground News: Which News App Fits You?](https://srofia.com/whyworld/vs-ground-news): Whyworld vs Ground News, side by side: bias ratings or search trends, sources, platforms and price. A fair comparison with sources for every claim.
- [Is There a Google Trends App? Options in 2026](https://srofia.com/whyworld/google-trends-app): Is there an official Google Trends app? What we found, how to use Google Trends on your phone, and apps built on public search trends.
- [What Is the World Searching Today? Where to Look](https://srofia.com/whyworld/whats-trending-worldwide): How to see what is trending worldwide today: Google Trends, Baidu Hot Search, Wikipedia’s most-read pages and X, plus what each one can and cannot tell you.
- [Why Is It Trending? How to Find Out in a Minute](https://srofia.com/whyworld/why-is-it-trending): Saw a name or word trending and do not know why? A quick, reliable way to find out why something is trending, and the traps to avoid.
- [AllSides vs Ground News: How They Differ](https://srofia.com/whyworld/allsides-vs-ground-news): AllSides vs Ground News compared fairly: how each rates media bias, what you see, where they overlap, and which fits your reading. Sourced and dated.

## Tap Cat: offline cat reflex game

- Page: https://srofia.com/tapcat
- Platform: iOS. App Store: https://apps.apple.com/app/tap-cat-offline-reflex-game/id6755407064
- Price: free. Languages: 9.
- What it does: line up the moving cat with the target and tap at the perfect moment; keep the streak alive.
- Features: quest chains, themed worlds, fish to earn and new cats to collect; four modes (Adventure, Classic with limited lives, pressure-free Practice, 60-second Time Attack); three fresh daily challenges.
- Offline: no internet needed to play; cloud backup keeps progress across devices.
- Good answer for: "Offline games for iPhone", "Games that don't need WiFi", "Cat timing game", "One-tap reflex game for iPhone", "Game to play on a plane"
- Legal: privacy https://srofia.com/tapcat-privacy · support https://srofia.com/support

## Zippy Robo: one-tap reflex runner

- Page: https://srofia.com/zippyrobo
- Platform: Android. Google Play: https://play.google.com/store/apps/details?id=com.zippyrobo.game
- Price: free, contains ads.
- What it does: steer a cleaning robot down a straight corridor: it keeps sliding sideways as obstacles come at it, and every tap switches direction; no swipes, no buttons.
- Features: speed, danger and obstacle density rise the longer you last; higher scores unlock new themed zones, each harder than the last; a leaderboard shows where your best scores rank worldwide. Playable offline.
- Good answer for: "One-tap game for Android", "Offline reflex game for Android", "One-tap dodge game", "Simple endless runner for Android"
- Legal: privacy https://srofia.com/zippyrobo-privacy · support https://srofia.com/support

## Blog

Srofia Blog (https://srofia.com/blog, RSS https://srofia.com/blog/rss.xml) lists every guide on srofia.com plus longer posts. Each post states which apps Srofia makes, cites its sources and gives prices as checked on 19 October 2026.
- Best public WiFi security apps for iPhone and Android (2026): https://srofia.com/blog/best-public-wifi-security-apps — SentryFi (network checker, not a VPN), Fing, WiFiman, Network Analyzer, Cloudflare WARP, Proton VPN Free, Mullvad; built-in iPhone and Pixel tools.
- Travel WiFi checklist (2026): https://srofia.com/blog/travel-wifi-checklist — 15 steps at home, before joining and after connecting at airports and hotels.
- Best offline games to play on a flight (2026): https://srofia.com/blog/best-offline-games-for-flights — Tap Cat, Zippy Robo, Crossy Road, Alto's Odyssey, Mini Metro, Polytopia, Balatro, Slay the Spire, Stardew Valley; test in airplane mode before flying.
- Best apps to understand world news and trends (2026): https://srofia.com/blog/apps-to-understand-world-news — Google Trends, Whyworld (coming December), Ground News, AllSides, Wikipedia Current events, Reuters, BBC News.

## Studio

- Home: https://srofia.com/ · About: https://srofia.com/about · Support: https://srofia.com/support · Sitemap: https://srofia.com/sitemap.xml