 This paper discusses how mobile applications and Web 2.0 interactive tools can be used to improve students' German language lexical competency. The composition and structure of lexical competency is explained, as well as the order of exercises for its development. Additionally, the didactic potential of these tools is explored, with examples of their successful application in the classroom. Finally, it is demonstrated that these tools can help organize students' work both inside and outside the classroom, leading to improved lexical competency. This article was authored by Julia M. Kazan, Vita A. Himaniac, Svitlana M. Amelina, and others.