Privacy Policy

Seoul Subway: English Metro · Effective 2026-10-13

1. Who we are

Seoul Subway: English Metro (“the app”) is published by Dcode (“we”), Republic of Korea. Contact: support@1pass.dev.

2. Data we collect

The app has no sign-up or login, does not ask for your name, phone number, or location, and does not use crash-reporting services. Dcode collects personal data through the app only when you send feedback with the optional form in Settings: your message, a reply email address if you choose to enter one, and basic technical details (section 5b). From the October 2026 update, the app also sends anonymous usage statistics to Google Analytics for Firebase (section 5a).

3. Data stored on your device only

Item	Purpose	Where
Saved stations	Your favourites list	On your device only
Preferences (language, theme, text size)	Remember your settings	On your device only

These are never transmitted to us or anyone else, with one exception: if you send feedback, the app language is attached to it (section 5b). Deleting the app deletes them.

4. Network access

All map, search, route and timetable data is bundled inside the app and works offline. The only network requests the app makes are for ads and, in the European Economic Area and the United Kingdom, the ad consent form (section 5); from the October 2026 update, anonymous usage statistics to Google Analytics for Firebase (section 5a); and the feedback you choose to send, which goes to our server (section 5b). A future version may download updated timetable files from our static file server; such requests carry no account, device identifier, or personal data.

5. Advertising

The app shows banner ads supplied by Google AdMob. To deliver and measure ads, Google may process technical data such as your device's advertising identifier, IP address, and general ad interaction data. We do not receive this data.

• On iPhone and iPad, the app shows Apple's App Tracking Transparency prompt once. If you tap Allow, Google may use your device's advertising identifier to show personalised ads. If tracking is denied or restricted, the app requests non-personalised ads only. You can change this at any time in iOS Settings → Privacy & Security → Tracking.
• On Android, the app requests non-personalised ads only.
• In the European Economic Area and the United Kingdom, a consent form appears before any ad is requested, and ads are personalised only if you consent there as well as allowing tracking. You can change your consent choices at any time from Settings → Ad privacy options in the app.
• Non-personalised ads are still delivered using limited data, for example for frequency capping and aggregated reporting.
• Google's own handling of this data is described in How Google uses information from sites or apps that use our services.

5a. Usage statistics (Google Analytics for Firebase)

From the October 2026 update, the app uses Google Analytics for Firebase to count how the app is used, so we can see which features matter and fix what does not work.

• What is sent: which screens are opened and a few actions (for example opening the line map or a station, or starting a route search); first app launch, app sessions and time the app is in the foreground; the app version, operating system and device model; and identifiers that Firebase uses to tell installs and sessions apart (on iPhone this can include Apple's identifier for vendor, IDFV). Google estimates an approximate location (country, region or city) from the connection's IP address. Search text, saved items and GPS coordinates are never sent.
• When: on a fresh install, collection is off by default. It is switched on only after the ad consent step, and only if ads may be requested at all (in the European Economic Area and the United Kingdom, this depends on the consent form). On later launches the previous setting may apply briefly while the app starts, after which the app switches collection off and checks again. Denying tracking on iPhone does not stop usage statistics; it only prevents advertising-related signals, which are shared only if you also allow tracking (section 5).
• Who processes it: Google LLC, on our behalf, on servers that may be outside Korea (for example in the United States). We use the reports to understand overall usage, not to identify you.
• Your choices: in the EEA and UK, change your choices in Settings → Ad privacy options; anywhere, deleting the app stops all collection.

5b. Feedback you send us

From the October 2026 update, Settings → Send feedback opens a form in the app. Nothing is sent until you press Send.

• What is sent: the message you write; a reply email address, only if you choose to enter one; and technical details that help us reproduce a problem: the app version, the operating system name and version, the platform (iPhone, iPad or Android) and the app language. Our server also turns the IP address of your request into a one-way hash (it cannot be turned back into the address) and uses the hash only to limit how often one connection can send messages. The hash is deleted after 24 hours.
• Why: to read and answer your message, to fix what you report, and to stop spam and abuse of the form. We do not use feedback for advertising, and we do not combine it with advertising or usage-statistics data.
• Where it goes: your feedback travels over an encrypted (HTTPS) connection to our server at meetnote.1pass.dev, which runs on Oracle Cloud in Chuncheon, Republic of Korea. The server saves it in its database. When feedback arrives, our administrator is notified through Telegram. The notification contains your message and your email address, if you entered one. Telegram handles the notification on our behalf, and its servers may be outside Korea.
• How long: we keep your feedback for six months after we receive it; it is then deleted automatically.
• Server logs: requests from the feedback form are logged without your IP address, your message or your email address.
• Your choices: the email address is optional; without it we cannot reply. Please do not put passwords, health details or other sensitive information in your message. To have your feedback deleted, see section 8.

6. Permissions

The app may ask you for two kinds of authorization, and works without either:

• Notifications (notification permission) — only when you set a get-off alert, so it can remind you before your stop. Alerts are scheduled on your device.
• Tracking (iPhone and iPad, tracking authorization) — Apple's App Tracking Transparency prompt, described in section 5.

It does not access your location, contacts, camera, or photos.

7. Children

The app is suitable for all ages and is not directed at children. Dcode does not knowingly collect data from children under 13 (or the applicable age in your country); ad data is processed by Google as described in section 5.

8. Your rights

Apart from feedback you choose to send (section 5b), Dcode holds no personal data about you through the app, so there is nothing else for us to access, correct, or delete. To access, correct, or delete your feedback, email support@1pass.dev from the address you entered in the form or, if you did not enter one, tell us roughly when you sent it and what it said; we cannot find a message without one of these. If you email us, we keep your message only to reply. You can withdraw or change ad consent in the app (Settings → Ad privacy options) and turn off tracking in iOS Settings. For data processed by Google, see Google's Privacy Policy. For any request, contact us and we will respond within 30 days.

9. Changes

We will post any changes on this page with a new effective date. Material changes will also be noted in the app's release notes.

10. Contact

Dcode · support@1pass.dev · dcode-labs.com/seoul-subway