The developed software is designed to analyze the semantic compatibility of educational text materials. This need is due to the existing negative trends noted by scientists (didactics, psychologists, neuroscientists) in the mechanism of information perception in the learning process of the modern generation of students. The way to level this tendency in the educational process is to take into account the unconscious patterns of information perception, associated with a gradual increase in its complexity. Semantic compatibility in the developed program is assessed by comparing the thesauri of educational materials, which allows in the future to influence the required degree of increase in their novelty (and, as a consequence, complexity). The work algorithm is formed taking into account the specific variable features of the Russian language. The proposed analytical tool is intended for didactic use, but due to the flexibility of the action algorithms provided by the program, it allows the use of the software product for the analysis of texts for other purposes, for which compatibility is of practical importance.