The main objective of the article is to present general description and statement of purpose, content, functional and technological features of software and algorithmic complex that implements the concept of intelligent system “Mobile tourist information assistant”, developed by scientists from the National University “Lviv Polytechnic”. In the work the basic problem situations that arise in the process of creating intellectual information system of this class and methods and ways to overcome them are presented and analyzed. The formal description of the intellectual system MIAT is presented in notation UML, information on the status and prospects of developed modern mobile information applications oriented to the needs of tourists are also presented. The authors have identified a number of essential functional features of the system MIAT, and have formed the basic requirements for the methods and means to be used in its design and algorithmic implementation.