Mobile banking apps are becoming more and more diffused as they allow customers to access most of the services offered by their bank using their smartphones and/or tablets. However, the need for supporting several operations and guaranteeing a high level of security to the end-users contributes to making the implementation logic of such applications more complicated. This complexity can negatively affect the application performance, thus compromising the user experience. The objective of this thesis is to identify possible bottlenecks that slow down the application startup and propose a solution to reduce the total time required to launch the app, without compromising its functionalities.