Results show that gamification elements with hedonic and social components, as well as functional aspects, are important features for user engagement and perceived impact. Within the scope of the study, two studies were conducted to examine the development process of the application and to determine the user reactions to the mobile application. The uMARS scale was used for collecting data from consumers. This study describes the development process and examines the perceived quality of MySusCof, an app intended to reduce the food waste of consumers. Mobile apps are seen as promising tools to change consumer behavior for ensuring more sustainable food consumption. ![]() There are many factors that cause food waste, and these can be prevented by changing the consumption behavior of adults. Consumer-focused interventions are crucial to achieve many Sustainable Development Goals (SDGs), especially SDG 12.3. ![]() Onsumers are responsible for almost 50 percent of food waste. We conclude by providing actionable recommendations to address such user concerns to aid the development of secure and privacy-preserving mobile payment applications. Users have shown significant concerns regarding the usability of these applications (48.47%), getting locked out of their accounts (38.73%), and being unable to perform successful digital transactions (31.52%). Our analysis highlights that users share concerns about sharing sensitive information with the application, confidentiality of their data, and permissions requested by the apps. ![]() Such large-scale evaluation through user reviews informs developers about the user perception of digital threats and app behaviors. Finally, we implemented sentiment analysis and did a mixed-methods analysis of the resulting 52, 749 negative reviews. Furthermore, we conducted a mixed-methods in-depth evaluation of the privacy-and security-related reviews resulting in a total of 163, 210 reviews. To this aim, we collected 1, 886, 352 reviews from the top 50 mobile payment applications. Users express such thoughts, complaints, and suggestions through app reviews. However, users' perceived privacy-and security-related concerns are continually rising. Mobile payment applications are crucial to ensure seamless day-to-day digital transactions.
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