Expert probability is used for decision-making, allows you to assess risks, and is especially useful in conditions of limited and inaccessible objective data. At the same time, there may be contradictions between the estimates, which may complicate analysis and decision-making. This paper describes an algorithm that checks the compliance of expert estimates using probability intervals. One of the sections is devoted to the development of an evaluation method for a new formula based on the original evaluation system. The article describes the user interface that provides interaction with the developed algorithms.