Terminology is a group of specialized words and respective meanings in a particular field, and also the study of such terms and their use; the latter meaning is also known as terminology science. Taking into account that the 21st century is considered the age of information technologies, the development of terms related to this field is also growing. In particular, now everyone is using smart phones, and considering that many devices are based on English mobile applications written in the Android operating system, so this article illustrates the semantic features of English terms in mobile applications.