Selection of a subset of methods for developing the interface of a mobile application for language learning

An analysis of the difference between the process of interface development in mobile applications for learning languages and the process of designing a user interface for other types of IT products is carried out. The analysis showed that mobile applications used for language learning have specific characteristics and principles of user interface development. The basis of the difference is the specifics of the technical design of mobile devices and the context of their use. Within the framework of mobile language learning applications, there are two categories of such applications: specialized, which are developed for language learning courses; general ones, which are developed for everyone who wants to learn the language on their own. The peculiarity of the interface design stage in mobile applications for learning languages and the need to take into account the differences of the user interface at this stage necessitate the analysis of existing methods of interface development to identify the features of user involvement in the process of developing mobile applications. The main existing methods of interface development, which are used in the design of interfaces of mobile applications for language learning, are considered. It has been established that none of these methods has significant advantages that would allow recommending this method as the most desirable tool for developing the user interface of a mobile application. To solve the problem of defining and planning actions regarding the necessary methods of developing interfaces of mobile applications for learning languages, it is proposed to adapt the method of expert evaluation. When adapting the method of expert evaluation to the specifics of solving the problem, the main attention is paid to the choice of the method of collecting assessments of individual experts. For this purpose, it is proposed to create questionnaires for both groups of experts (users and the development team). Approbation of the adapted method in solving this problem in the IT project for the development of a mobile application for language learning was carried out.