Table 1.

Main questions and methods for addressing the questions.

Main questions	Methods to address the questions
Phase 1. What are the needs and gaps for cancer care partners?	Discussions with 138 stakeholders including 32 care partners
Phase 2. What features would users like to see in such an app?	Semistructured interviews with three physicians, three cancer survivors, and three care partners
Phase 3. Is an mHealtha app for cancer care partners feasible for them to use?	28-day beta iOS (Apple) user testing with feasibility and acceptability feedback from seven care partners in two geographically diverse academic cancer centers (Duke University and Stanford University)

^amHealth: mobile health.