The touristic mobile application designed for Székelyudvarhely can be handled easily; its use helps discover the town. In this mobile app serving as a tourist guide we can find the photos of the sights, accompanied by trilingual descriptions (HU, EN, RO). The uniqueness of the application is given by the sound-recordings which complete the sightseeing, making it more enjoyable and increasing the value of the app. The application launched by the office of Tourinfo also contains a map, which is a great help in orientation. The application can be found on the following websites: www.tourinfo.ro, www.visitodorhei.ro, www.visitinodorhei.ro , www.iranyudvarhely.ro.