FAQ

No. Wi-Fi 分享 has no accounts — just open the app and use it. We do not ask for email, name, phone or birthday.

Passwords live in your phone's encrypted vault. Everything is local; nothing is uploaded to our servers.

That is an iOS limitation — sometimes the system will not hand the current SSID to apps. Type it in manually, then generate the QR.

It lets the LAN radar scan devices on your subnet — routers, NAS, TVs, printers. It is not location, and it does not read photos or contacts.

Free covers the core forever and QR sharing stays free. Pro unlocks more saved slots and the advanced tools — NT$30 one-time, no subscription.

Data is local to the device. Deleting the app removes the stored Wi-Fi entries. Back things up yourself before switching phones.

No. Apple ID manages the iPhone purchase; Google account manages the Android purchase. They do not cross-license.

This is a hard iOS platform limit, not a bug. Apple does not grant the `NEHotspotHelper` entitlement to ordinary apps — only carrier-grade apps get the nearby Wi-Fi list. Android has tightened similar permissions since 8.0. The correct flow is to have the other person scan the QR code you generated with their camera; you never need to enumerate nearby hotspots.

Three common reasons: (1) the device has AP Isolation / Client Isolation turned on, so the router walls off devices on the same subnet from each other; (2) the device is on a guest Wi-Fi, which is a different subnet from your phone; (3) iOS mDNS only sees services whitelisted in `NSBonjourServices` (15 entries like `_airplay._tcp`, `_homekit._tcp`, `_printer._tcp`) — anything outside the whitelist stays invisible. Android has no such restriction.

Free gives you 5 speed tests per day. Once the quota is gone, you see an optional "watch an ad to earn one more" prompt — you can also just wait until midnight for the daily reset. The ad is a 5-second forced rewarded ad; quitting halfway does not consume the quota or run a test. Pro buyout NT$30 removes ads entirely and unlocks unlimited tests. Core QR sharing and all 18 tools are ad-free; ads only ever appear in the single "free user over 5 daily speed tests" scenario.

A regular speed test only tells you "X Mbps download," but the real cause might be DNS, Wi-Fi signal, IPv6 config or the ISP. This tool runs DNS resolution + Ping + IPv6 connectivity in one go and classifies the result into 6 verdicts: slow DNS, weak Wi-Fi signal, slow ISP line, broken IPv6 config, Wi-Fi-only interference, or all clear. Each verdict comes with concrete next steps (switch DNS, switch band, contact ISP, etc.) — not just a single number.

WoL sends a UDP-broadcast magic packet to wake a device on the same subnet whose LAN port is still powered (typical use: remote-wake NAS, home server, desktop PC). Requirements: (1) the target device's motherboard / NIC supports WoL and it is enabled in BIOS; (2) the device is on wired Ethernet (most Wi-Fi cards do not support WoL); (3) your phone and the target are on the same subnet. The app auto-detects the broadcast address; just enter the target MAC. It does not support waking devices over the internet (that needs router port forwarding, out of the app's scope).

Enter any HTTPS hostname to inspect the issuer (CA), validity period, SHA-1 / SHA-256 fingerprint and SAN (Subject Alternative Names). Under the hood it uses `SecureSocket.connect` with `onBadCertificate: (cert) => true`, deliberately allowing you to view expired, self-signed and untrusted certs (a normal browser would refuse to show them). This is "inspection," not "trust" — the app never builds a real connection on that cert. Useful for inspecting a company self-signed cert, diagnosing expired certs, or learning PKI internals.

Common scenarios that go past 3: (1) the home router has a separate 2.4G and 5G SSID (default on many older routers); (2) you keep a guest Wi-Fi; (3) NAS or printer brought its own IoT SSID; (4) you also stored your parents' house, the office, or a regular café. A normal household easily hits 2–3. Pro NT$30 unlocks unlimited entries + QR customization (gradient, centered logo, rounded corners) + batch PDF printing (for Airbnb / café wall posters), one-time buyout — no further charges.

Yes, fully. Wi-Fi 分享 has zero backend, zero analytics SDK, zero tracking. Tools that need external data call public lookup services directly: DNS speed comparison uses Cloudflare / Google / Quad9 public DoH endpoints; public-IP lookup uses ipapi.co / ipinfo and similar public APIs (with three-endpoint fallback); Whois uses rdap.org bootstrap; the TLS inspector TCP-connects straight to the target host. Every HTTPS call goes directly from your phone to the third-party service — our servers are never in the middle, because there are no servers.