This paper presents the results of a comparative analysis of Java and Dart programming languages in terms of suitability for creating mobile applications.The research was carried out on two proprietary applications with identical functionalities, which were implemented in the analyzed languages.The analysis covers areas such as: CPU diamond painting strand en zee load, RAM consumption, battery consumption and program execution time.Additionally, on the basis of proprietary applications, the code structure, number of lines of code and community support were considered.The results of the analysis indicate that it is difficult to clearly determine cga 200 to cga 510 adapter which language is more efficient, so the choice between Java and Dart should be analytical and best suited to the requirements of a given application.