This paper thoroughly explores performance monitoring and process execution time and presents the benefits and limitations of using modules in software development. The goal of the paper is to compare how modularization affects on the overall development of a project relative to the classic approach, and to show whether it is possible to divide application components into modules while maintaining proper and unobstructed access and operation of the application. For the purposes of the research, a project was created with the theme of networking systems for IT professionals. The project consists of user authentication and validation, messaging, posting and sharing content, and connecting users. The paper describes the technologies and tools used by the project to implement system components, including an example implementation of an architectural pattern for software development in modules. In addition, examples of extensions to other Android platforms and opportunities to develop new application components are presented. The Android Studio development environment was used to create the project, and the project code was written in the Java programming language.