Korea Tourism Organization has just released it's Seoul Walking Tour app which will guide you through the sightseeing spots of Seoul. It provides both audio and text information for 16 (and counting!) tourist attractions around Seoul including Gwanghwamun Square, Insadong, and Jogyesa Temple. The voice guide is available in Korean, English, Japanese, and Chinese. The application uses GPS (Global Positioning System) to easily guide visitors through the tourist attractions in downtown Seoul. Seeing that the app is updated regularly by KTO, it seems the app is just going to get better by the day with increased content and sightseeing spots. The app also contains maps and pictures of every travel spot. Try it out for yourself for free by searching for "Seoul Walking Tour App" at your respective phone's app store.