Guest Editors Introduction: Special Issue on User Feedback and Software Quality in the Mobile Domain

The global adoption of mobile devices has increased dramatically over the last few years and mobile devices have become part of our everyday lives. As a consequence, we can observe a continuing growth in the development of millions of software applications that run on mobile devices, commonly referred to as “apps” [1]. The high diffusion of mobile apps has encouraged software engineering research to devise approaches for supporting developers in overcoming the challenges they are facing in this new competitive development market. Moreover, the high availability of customer-, business- and technically-related information about apps that can be found in app marketplaces [2] represents a rich opportunity for researchers interested in (i) investigating and understanding the specific issues of mobile app development, and (ii) building novel methods and tools to help developers during the different phases of an app’s lifecycle.