This course completion work addresses the development process of the "Agenda Musical/Eventos CCB" application for the Christian Congregation in Brazil. This project, born from interdisciplinary studies from the internet systems course, aims to address the challenges faced by church members and others interested in ecclesiastical activities. The application's proposal is to offer a comprehensive solution that catalogs and integrates a diversity of events promoted by the church, with the aim of facilitating interconnection between members and providing a highly personalized experience. Users have resources available to them that allow them to explore events based on their individual preferences, location, dates, times and specific categories. Furthermore, the application offers the ability to create personalized calendars, thus optimizing user participation and engagement. Also noteworthy is the concern with improving the experience of church members, providing detailed information about events, personalized notifications and a proactive reminder system for efficient management of their personal agendas. Regarding the development process, the prototyping phase was conducted using design tools such as Figma and FlutterFlow. The choice of these tools was based on their accessibility and ease of integration with other tools, which allows the development team to collaborate efficiently. Preliminary results from a market acceptance survey revealed considerable interest in the features offered by the application. Notably, 94% of the 55 respondents expressed that they would feel more motivated to attend church events if they received automatic reminders about them. This positive response highlights the application's relevance and effectiveness in meeting users' needs comprehensively and efficiently.