Mobile Health Application (PACT) to Improve Engagement in Advance Care Planning

Inclusion Criteria: * PATIENT: Diagnosis of poor prognosis advanced cancer defined as locally advanced or metastatic solid cancer and/or disease progression following at least first line systemic therapy and/or relapsed or refractory hematologic cancer. * PATIENT: Have internet access through a computer or a mobile device; the principal investigator (PI) will ensure that those who have access to a computer or mobile device have access to a computer or mobile device with internet access to ensure they can complete study procedures. * PATIENT: The ability to provide informed consent. * PATIENT: Identification of a loved support person if one is available; patients who are unable to identify a support person willing to participate with them will be allowed to continue in the study on their own. * PATIENT: 18 years of age or older. * SUPPORT PERSON: The person (family member or friend) whom the patient indicates being a support person. * SUPPORT PERSON: English speaking. * SUPPORT PERSON: 18 years of age or older and able to provide informed consent. * PROVIDER: Current clinical practice and/or research with advanced cancer patients. * PROVIDER: A history of 3+ years working with advanced cancer patients. * PROVIDER: 18 years of age or older. Providers across disciplines (e.g., social work, oncology) will be enrolled. Exclusion Criteria: * PATIENT: Not fluent in English. * PATIENT: Severely cognitively impaired (as measured by Short Portable Mental Status Questionnaire scores of \>= 6) to be delivered by trained study research staff during screening. * PATIENT: Too ill or weak to complete the interviews (as judged by the interviewer). * PATIENT: Currently receiving hospice at the time of enrollment. * PATIENT: Children and young adults under age 18.