Mobile applications are the best way to exploit mobile devices capabilities in terms of hardware and software environment. However, to create this kind of application, a developer should design a different native application for each operating system. The most used mobile operating systems are Android and iOS, so each native mobile application should be developed at least two times. On the contrary, web technologies such as HTML, CSS and Javascript are highly portable but have the limitation that a web application must run inside the browser and cannot fully exploit the advantages of the operating system and the hardware device. Hybrid applications come to solve this problem giving the possibility to develop a mobile application with web technologies, combining the portability with the possibility to exploit the device features.