High growth of smartphones and tablets usage has brought enormous rise in the use of newer form of electronic banking - Smart Banking, nowadays. This form of e-banking is suitable for small businessmen or private usage and its usage increases with the rise of popularity of mobile phones with operation systems. Transmitted information is more sensitive and related to financial transactions in e-commerce or communication between the client and the bank. There is an extremely important question of security hidden on the background of these applications. Is the security of distributed Smart Banking applications in Slovakia sufficient? How secure are these applications and which features may influence the security of these applications. The aim of the paper is to analyze the security of Smart Banking applications distributed by Slovak banks. The outcomes of our research are the specifications of parameters which affects the security of these applications. We also suggest a methodology for comparison of Smart banking applications depending on these parameters and for comparison of particular analyzed Smart Banking applications of Slovak banks which are used by the majority of Slovak clients.