This study explores the impact of a mobile-based stress management application on users’ mental health improvement, focusing specifically on App Engagement (AE) and Perceived Stress Reduction (PSR) as key predictors. A structured questionnaire was administered to 336 respondents from New York, with items rated on a five-point Likert scale. Using R Studio for statistical analysis, a multiple linear regression model was developed to evaluate the relationship between the variables. The findings rev