Three researchers at the University of Duisburg-Essen opened a company called Locoslab after several years of research in the area of localization. This article discusses the experiences of the research team in the design, development and reallife testing of SIMON Mobile, a mobile application that uses a cloud infrastructure to provide support for mobility impaired users for different cities like Madrid, Parma, Lisbon and Reading. The application is the main product of three years of collaborative research as part of the SIMON European project, that involves researchers from Spain, Italy, Portugal and Germany. The main asset of the application is the seamless integration of indoor and outdoor navigation routes and the fact that the computed routes take into account the characteristics of the user in terms of capabilities and preferences. At the time of this writing, SIMON Mobile has been available for several months at the Google and Apple App Stores and has been downloaded over 1000 times with very good user feedback. Additionally, all of the operations from the computation and retrieval of the map tiles to the algorithm that computes the optimal route for the user, are performed in the cloud. The client application simply acts as the local device where the information from the cloud is presented in the appropriate form to the user. This has the advantages that routing algorithms, for example, can be improved on the cloud backend and do not require the update of the application on the client side in order to use the new and improved services.