Explore the subway lines of Seoul, Busan, Daegu, Daejeon, and Gwangju in the Republic of Korea with high-resolution maps in multiple languages, including English, Japanese, Chinese, and Korean. On the first launch, all maps are downloaded to your device, enabling offline use in subsequent sessions. The app automatically updates maps when new versions are available, ensuring you always have the latest information. Easily share maps with others directly from the app.