Mobile technologies, which are one of the main determinants of social and economic changes in the world, develop rapidly. Mobile applications, one of the most important indicators of mobile technologies, are defined as programs that support the realization of daily transactions and take place on mobile devices. In order for a mobile application to be considered successful, individuals must have adopted mobile applications and frequently use applications as well as installing mobile applications. The aim of this study is to understand, interpret and analyze the behaviors of consumers to decide to use a specific application in application markets of mobile phones. In this context, direct and indirect factors that enable consumers to decide on the use of an application have been investigated by integrating the Diffision of Innovations (DOI) and Extended Technology Acceptance Model (Extended TAM) theories, which are among the most effective theories in the literature. Questionnaire method was used as a data collection tool in the study. According to the results of this study conducted with 396 people, it was found that image and observability directly, significantly and positively affect the intention to adopt mobile applications, while perceived ease of use and perceived usefulness did not significantly affect the intention to adopt mobile applications. It is known that young people attach importance to features such as image, fame, and being known. These results are are seemed quite significant for Turkey which has young population and where mostly young people use mobile applications.