Information and Communication Technologies have become more and more important over the last years and Smart Cities are nowadays one of the main fields of research in the world. Mobile ad hoc networks and wireless sensor networks presence is increasing and vehicular-oriented variations are progressively becoming more significant. But the lack of adapted vehicles slow down the development of these technologies and reduce their potential. On the other hand, the number of mobile devices is in constant growth and in 2013, more than 81% of the world’s smartphones run an Android operating system. One logical solution is to use these mobile devices to provide different kind of services for the Smart Cities. In our project we have designed an Android application that offers two services for a Smart City: a real-time parking spot finder and an emergency instant notifier. Our application will act as a node of a VANET, and will connect to other devices using different types of communication such as WiFi Direct or Google Cloud Messaging. We have also designed an architecture of notifications that, in case of emergency, sends a message via push to all the users of the application, notifying them of the event. This message, in turn, can be forwarded using any kind of messaging application. Moreover, as new potential services appear each day, we have also adapted the application so it will suit completely to future different purposes.