Choosing development technology, native, web or hybrid, is one of the most important decisions to make when planning mobile app development. Each has its advantages and disadvantages, which will be discussed in more detail below. Nevertheless, this paper focuses on hybrid mobile applications. The development of mobile devices, processor and memory, as we know it today, made it possible to perform increasingly complex tasks that we could previously perform solely on personal computers. In parallel with the development of modern mobile device hardware, the so-called smartphone, web browsers have evolved, paving the way for hybrid technologies to build hybrid mobile applications. Creating a hybrid mobile application requires fewer developers and less time to build a finished product what saves resources, which is not negligible especially for non-profit projects. Creating a hybrid mobile application, in practice, means that during the development of a project, it is actually a web application, while in the final phase, the web application is packaged with Apache Cordova wrapper in a way that is customizable to run on iOS and Android mobile devices and will not differ from native applications. "Creative Treasury" is a popularization symposium of scientists and practitioners gathered around the millennial role of the creative industry and is assumed to have a mobile application in addition to the website for its visitors and participants. The aim of this paper will be achieved through the mobile application for the popularization symposium "Creative Treasury", which has been held regularly every year since 2015 at the Faculty of Economics in Osijek.