The eLearning Department of MTA SZTAKI started mobile-based software development in 2005. As a result of this activity, a new mobile application family was created with the brand name of GUIDE@HAND. These applications are able to meet a wide variety of demands and trends of the present life. The first such mobile application served for tourist purposes and was granted with several prizes in Hungary and abroad. Due to the continuous development, not only tourists may feel like at home in a strange town or region but local people are also provided with an unforgettable experience, as well!