%0 Journal Article %@ 2561-326X %I JMIR Publications %V 5 %N 8 %P e22608 %T Development of a Mobile Health App (TOGETHERCare) to Reduce Cancer Care Partner Burden: Product Design Study %A Oakley-Girvan,Ingrid %A Davis,Sharon Watkins %A Kurian,Allison %A Rosas,Lisa G %A Daniels,Jena %A Palesh,Oxana Gronskaya %A Mesia,Rachel J %A Kamal,Arif H %A Longmire,Michelle %A Divi,Vasu %+ Medable Inc, 525 University Avenue, Suite A 70, Palo Alto, CA, 94301, United States, 1 408 656 2948, ingrid@medable.com %K cancer %K oncology %K mHealth %K caregiver %K cancer survivor %K mobile app %K smartphone %K feasibility %K caregiver burden %K symptom reporting %D 2021 %7 13.8.2021 %9 Original Paper %J JMIR Form Res %G English %X Background: Approximately 6.1 million adults in the United States serve as care partners for cancer survivors. Studies have demonstrated that engaging cancer survivors and their care partners through technology-enabled structured symptom collection has several benefits. Given the high utilization of mobile technologies, even among underserved populations and in low resource areas, mobile apps may provide a meaningful access point for all stakeholders for symptom management. Objective: We aimed to develop a mobile app incorporating user preferences to enable cancer survivors’ care partners to monitor the survivors’ health and to provide care partner resources. Methods: An iterative information gathering process was conducted that included (1) discussions with 138 stakeholders to identify challenges and gaps in survivor home care; (2) semistructured interviews with clinicians (n=3), cancer survivors (n=3), and care partners (n=3) to identify specific needs; and (3) a 28-day feasibility field test with seven care partners. Results: Health professionals noted the importance of identifying early symptoms of adverse events. Survivors requested modules on medication, diet, self-care, reminders, and a version in Spanish. Care partners preferred to focus primarily on the patient’s health and not their own. The app was developed incorporating quality-of-life surveys and symptom reporting, as well as resources on home survivor care. Early user testing demonstrated ease of use and app feasibility. Conclusions: TOGETHERCare, a novel mobile app, was developed with user input to track the care partner’s health and report on survivor symptoms during home care. The following two clinical benefits emerged: (1) reduced anxiety among care partners who use the app and (2) the potential for identifying survivor symptoms noted by the care partner, which might prevent adverse events. Trial Registration: ClinicalTrials.gov NCT04018677; https://clinicaltrials.gov/ct2/show/NCT04018677 %M 34398787 %R 10.2196/22608 %U https://formative.jmir.org/2021/8/e22608 %U https://doi.org/10.2196/22608 %U http://www.ncbi.nlm.nih.gov/pubmed/34398787