 This systematic review and meta-analysis aims to determine the efficacy of interventions that incorporate apps in facilitating weight loss and health behavior change in the Asian population. The results show a small to moderate effect size for weight change, indicating slightly greater weight loss achieved in the intervention group. However, this may not be representative of long-term studies. More evidence is needed to determine the efficacy of apps in the long term, and address the low uptake of apps to maximize the potential of the intervention. Future research should determine the efficacy of each component of the multi-component intervention to facilitate the designing of studies that are most effective and cost-efficient for weight management. This article was authored by Su Min-ong, Juliana Chen, Jiahuan Liu, and others.