In recent years we have witnessed an unprecedented and growing use of mobile communications. The use of mobile devices such as tablets and smartphones has led to the development of software applications, the so-called "apps". The growing use of apps, offered at low cost or even free, for virtually every aspect of a user's life, from managing a personal bank account to seeking information, diagnosis or even immediate treatment for health problems, could have serious implications for the protection of personal data. data and privacy of its users. The intrinsic characteristic of mobile devices as personal devices has turned them into “a spy in our pockets” (Green, N., & Sean, S. 2003). The pervasiveness of software applications has the potential to reveal enormous amounts of personal information since a single piece of data can, in real time, be transmitted from the mobile device to be processed or copied between third-party chains, such as advertising revealing quantities significant personal data. Numerous issues related to ongoing regulatory and research developments on apps need to be examined in light of EU data protection law, such as the roles and responsibilities of the different actors involved, privacy concerns arising from the emergence of apps in smart mobile devices and the legal framework applicable to the processing of personal data in the development, distribution and use of apps on smart devices. BACKGROUND Mobile technology has come a long way in the last quarter of the century. In the 1980s, cell phones could only be used for making calls. Since then, the development of new electronic communication services has led to the widespread use of mobile phones. According to a recent survey conducted in... half the paper... in the last decade. Technology has changed and user behavior has also changed. People use the Internet via smartphones and tablets to “post and search for personal, often intimate, information online; communicate with friends and colleagues on social networks" (Tene, O. 2011) Smartphones and tablets have replaced PCs, traditional telephones, cameras and video cameras, allowing the storage of large quantities of personal information such as photographs, videos, contact information, music etc. Some types of data such as "text messages, numbers and unique identifiers are stored automatically" allowing access and processing of huge amounts of personal information such as "contact circles, personal or health-related search questions and a wide variety of intellectual and political interests, of information" (Urban, J., M. Et al., 2012).