ORIGINAL RESEARCH article Volume 8 - 2026 | doi: 10.3389/fdgth.2026.1987796 Reviewed by ORIGINAL RESEARCH article Article metrics View details Abstract Smartphone-based measurements are an interesting approach to monitor stress and potentially promote mental well-being without burdening users. Voice features are increasingly explored as low-burden indicators of stress, yet most evidence comes from laboratory studies with induced stress and limited ecological validity.
