Privacy Policy
This policy explains how the mobile app “Yeogiya” (the “App”) handles your information. The App is operated by ECSOFT.
Yeogiya has no account and does not ask for personal information such as your name, phone number or email. There is no advertising or analytics SDK. Location and motion sensor data are used only on your phone to work out which station you are at, and never leave your device. When the App opens, it sends only basic information such as device type and app version to the operator’s server so we can count users (see 3).
1. Information the App uses on your phone
| Location | Used to find the nearest station when you open the App, and to correct the current station using fixes obtained inside stations during a trip. It is no longer used once you end the trip. Location never leaves your device and is not stored unless you turn on “Record rides” (below). |
|---|---|
| Motion sensors (accelerometer, gravity) | Used to detect the train departing and stopping in order to count stations. Not stored or transmitted. |
| Notifications | Arrival and destination alerts are shown locally on your phone. Their content is not sent to any server. |
| Settings and recent trips | Your last 5 trips, alert range and voice guidance setting are stored only on your phone. |
| Voice guidance | Station names are read aloud with the speech engine installed on your phone. |
2. Ride logs (only when you turn them on)
If you turn on “Record rides” in Settings, sensor values, location and the times you tap “Arrived” are saved to a file on your phone to check detection accuracy. Only the latest 5 files are kept; older ones are deleted. The file leaves your device only when you tap “Send latest log” and choose an app (email, messenger, etc.) yourself. The App never sends it on its own. This option is off by default. If you send a log to the operator, it is used only to improve detection accuracy and is deleted without delay once that purpose is fulfilled.
3. App launch records (information sent to the operator’s server)
After you agree to the terms, each time you open the App it sends the information below once to a server run by the operator (app.transkeyboard.com), to count users and see which devices and versions are in use. Your name, phone number, email, location and stations are not sent.
| Device number | A random number used only by this App, hashed once more. It is not linked to other apps’ identifiers or advertising IDs. |
|---|---|
| Device and app info | Device model (e.g. SM-S921N), operating system and version, app version, phone language setting, install source (store or not) |
| Country | The server works out only the country (e.g. KR) from the connecting IP address. The IP address itself is not stored. |
| Launch dates | The first and last day the App was opened, and on which days it was opened |
This information cannot identify you. It is used only for user statistics and to improve the App (deciding which devices and versions to support), never for advertising or tracking.
4. Sharing, processing and international transfer
The information above is not shared with third parties, entrusted to processors or transferred abroad. The App contains no advertising, analytics or crash-reporting SDK.
5. Retention and deletion
Recent trips, settings and ride logs on your phone are deleted when you uninstall the App. Launch records on the server are kept as long as needed for user statistics; to have them deleted, email us at the address below and we will delete them without delay.
6. Location information
The purposes of location use, your rights (withdrawing consent, pausing use, etc.) and the person responsible for location information are set out in the Location-Based Service Terms. On first launch the App shows these terms and this policy and asks for your agreement before requesting location permission.
7. Permissions
| Location | Finding the nearest station and correcting the current station. On iOS, location is used during a trip so detection continues while you use other apps (a location indicator is shown). |
|---|---|
| Motion & Fitness (iOS) | Detecting train departures and stops. |
| Notifications | Arrival and destination alerts. |
| Display over other apps (Android) | Showing the current station and arrival banners over videos. If not allowed, notifications are used instead. |
You can turn permissions off at any time in your phone’s settings; only the related feature stops working.
8. Children
Anyone may use the App. It does not ask any user, including children under 14, for personal information such as a name or contact details. App launch records (see 3) are handled the same way regardless of age.
9. Contact
Privacy officer: Euichan Hong (홍의찬) · Email: hongeuichan@gmail.com
10. Changes
If this policy changes, we will post it on this page. Material changes, such as starting to collect new information, will be announced in advance together with the app update.
Data sources
Station list and coordinates: © OpenStreetMap contributors, ODbL · Fast-transfer data: Ministry of Land, Infrastructure and Transport, Korea (data.go.kr)