The CityLoops platform for Seville's wellbeing (WB) monitoring has the main goal of determining the current wellbeing both in the city and in the different districts. The software tool combines data regarding economic, social, demographic, environmental, and waste with circular indicators. This way, the tool will determine a new composite indicator that determines the relationship between well-being and the collected data. Managers have access to the simulation framework to update collected data and/or increase the considered indicators as well as their weight in the well-being calculation. The software tool for citizens will provide data about the new composite indicators (well-being-circularity) considering the last updated data and the same weights for the three kinds of indicators i.e., economic, environmental, and social.