This thesis was written as a part of the MSc in Mobile and Web Computing at the International Hellenic University. This study aimed in developing an affective system that promotes budget adherence. The focus was twofold. The first part aimed at developing a state-of-the-art expense monitoring system that helps users stay on budget. Innovative and modern web technologies were employed in order to create a fully functional, mobile-friendly, progressive web app. The second part focused on the study of affective feedback techniques. Specifically, the study aimed to answer how the implementation of animated GIFs in the system as a mean to provide affective feedback can influence budget adherence in populations. One hundred thirty one (131) volunteers used the developed app for a three-week period. Data was gathered through the web app during this period and a statistical analysis was conducted. Key findings suggested that the developed system aids in and promotes budget adherence. The animated GIFs as a mean to provide affective feedback was expected to influence the budget adherence. However, this hypothesis was not confirmed. The developed prototype system has the potential to be expanded and become more compound facilitating thus future research both on web app development technologies and on study of affective feedback techniques.
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