Huge number of factors are encountered upon creating a mobile application, which can affect directly or indirectly the functionality of the mobile application. Altough nowadays we have a wide spectrum when choosing a programming language for creating a mobile application, in this paper I decided on the Flutter: Dart combination. During my studies, I studied the Dart programming language in parallel, which in combination with Flutter enables the creation of applications on multiple platforms, although I studied different programming languages during my studies, I can apply most of the knowledge and techniques in Flutter: Dart mobile application. The topic was chosen because this work represents everything I learned during my studies and through independent study and research. The expected contribution of this final paper is the popularization of the Flutter SDK and the Dart object-oriented programming language, in order to further approach in the amount of use and compete with other more widespread programming languages for creating mobile applications such as React Native and the Swift programming language developed by Apple. When writing the paper, I described in detail the installation of the Flutter SDK, the installation of Microsoft Visual Studio Code, the creation of a mobile application, the importance of state management in the application and the purpose of the Application Programming Interface (API)