Terms of Service

Chapter 1. Terms of Service

Article 1 (Purpose)

These terms set out the conditions and procedures for using the mobile app “Yeogiya” (the “Service”) provided by ECSOFT (이씨소프트, the “Company”), and the rights and obligations of the Company and users.

Article 2 (Agreement and changes)

① Users may use the Service after agreeing to these terms on the consent screen shown at first launch.

② The Company may change these terms within the limits of applicable law. Changes will be announced on this page and in the App from 7 days before they take effect (30 days for changes unfavourable to users), and material changes will require renewed consent in the App.

Article 3 (Service)

① The Service estimates the stations at which a subway train stops using the phone’s motion sensors and location, and notifies the user of stops, the destination and transfer stations by alerts, vibration, voice and on-screen display.

② The Service is free and has no account, advertising or paid purchases.

③ Station lists and coordinates are derived from OpenStreetMap (ODbL), and fast-transfer information from data published by Korea’s Ministry of Land, Infrastructure and Transport; they may differ from actual operations and facilities.

Article 4 (Limitations)

① Satellite positioning is unavailable underground, so the Service estimates stops from the train’s acceleration, deceleration and vibration. Alerts may be late, wrong or missing because of long signal holds, sudden stops, skipped stations, delays or service changes, phone settings or power saving, or other apps.

② Users should treat the Service as an aid and also check on-board announcements and station signs.

Article 5 (User obligations)

Users must take care of their safety — for example, not operating the screen while walking or driving — and must not use the Service for purposes contrary to law or public order.

Article 6 (Changes and suspension)

The Company may change or suspend all or part of the Service for operational or technical reasons, and will give advance notice of significant changes or suspension through app updates or this page.

Article 7 (Limitation of liability)

① The Service is provided free of charge. Unless caused by the Company’s wilful misconduct or gross negligence, the Company is not liable for losses caused by late or incorrect alerts due to the limitations in Article 4 (such as lost time or fares from missing a stop).

② The Company is not liable for problems caused by the user’s phone, network, operating system or other apps.

Article 8 (Disputes)

Disputes relating to the Service are governed by the laws of the Republic of Korea, and any lawsuit shall be filed with the competent court under the Korean Civil Procedure Act. Please contact us first at the address below.

Chapter 2. Location-Based Service Terms

Article 9 (Purpose)

This chapter sets out how the Company uses location information in the Service and the rights of users and obligations of the Company under Korea’s Act on the Protection, Use, etc. of Location Information (the “Location Information Act”).

Article 10 (Services using location and how)

Article 11 (Ride logs)

Only when the user turns on “Record rides” in Settings are sensor values and location saved to files on the phone (latest 5). These files leave the device only when the user sends them to an app of their choice with “Send latest log”. If the user sends them to the Company, the Company uses them only to improve detection accuracy and deletes them without delay once that purpose is fulfilled.

Article 12 (User rights)

① Users may withdraw all or part of their consent to the use of location information at any time by turning off location permission in phone settings or uninstalling the App. Without location permission, finding the nearest station and location correction do not work, and users can choose their boarding station manually.

② Users may request a temporary suspension of location use. Tapping “End” on the ride screen stops location use.

③ Because the Company does not collect or keep users’ personal location information, it holds no location information or records confirming its use or provision. Requests to view, be notified of or correct such information may be made to the contact below, and the Company will respond without delay.

Article 13 (Children under 14 and guardians)

The Company does not collect personal location information and therefore does not collect that of children under 14. Children under 14 should use the App under a guardian’s supervision.

Article 14 (Damages and exemptions)

If a user suffers damage because the Company violated the Location Information Act, the user may claim damages, and the Company is liable unless it proves it was not at fault through intent or negligence. Other exemptions follow Article 7.

Article 15 (Dispute mediation)

Disputes about location information shall be settled by agreement between the parties; if no agreement is reached, the parties may apply for a ruling or mediation to the Korea Communications Commission or the Personal Information Dispute Mediation Committee.

Article 16 (Company information and person responsible for location information)

Addendum

These terms take effect on November 5, 2026.