SUPPORT+ Digital Self-Management and Clinical Support for Advanced Cancer

The goal of this clinical trial is to learn whether SUPPORT+, a digital symptom monitoring and self-management mobile application, can improve health-related quality of life and clinical outcomes in adults with advanced cancer receiving palliative care. The main questions this study aims to answer are: * Does use of SUPPORT+ help maintain or improve health-related quality of life compared with usual palliative care? * Does SUPPORT+ reduce functional decline and acute health care use, such as hospitalisations, compared with usual care? Researchers will compare patients using the SUPPORT+ mobile application with patients receiving usual palliative care to see if digital symptom monitoring combined with automated self-management guidance and nurse follow-up improves patient-reported and clinical outcomes. Participants assigned to the SUPPORT+ arm will: * Use the SUPPORT+ mobile application for weekly symptom reporting using the Integrated Palliative Care Outcome Scale (IPOS) * Receive automated self-management advice based on reported symptoms * Receive follow-up contact from a nurse when severe or concerning symptoms are identified * Continue to receive usual palliative care throughout the study period Participants assigned to the usual care arm will: * Receive usual palliative care provided by their clinical team * Complete study assessments at scheduled time points * Not receive digital symptom monitoring, automated self-management advice, or nurse follow-up through the SUPPORT+ application