Inclusion Criteria:  Individuals are eligible if they:  Self-identify as Black or African American Self-identify as a cisgender man Are HIV-Positive themselves, or are the partner of someone who is living with HIV Are age 18 or older Have a primary relationship partner, defined as someone to whom the participant is committed above anyone else for three or more months Uses and owns a personal smartphone Willing and able to provide informed consent  Partners are eligible if they:  Self-identify as a cisgender man Are age 18 or older Have a primary relationship partner that is the referring participant Uses and owns a personal smartphone Willing and able to provide informed consent  Exclusion Criteria:  Those who:  Report fear of intimate partner violence (IPV) resulting from participation Are unwilling or unable to disclose HIV status to primary partner Present evidence of severe cognitive impairment that would prevent comprehension of study procedures assessed during informed consent