The study will evaluate the use and preliminary impact of an mHealth app for improving sexual health outcome measures among male couples by assessing whether exposure and use of the app results in improvements in participants and couples' self-reported sexual health and prevention behaviors, beliefs, and attitudes. The study will enroll both partners of the 42 male couples into a 2-month randomized controlled trial with a waitlist control condition of one month. Couples will be assigned to either the immediate intervention group ("intervention arm") or the waitlist-control group ("waitlist-control arm"). All participants will take an assessment survey at baseline, and the intervention group will be oriented on the installation and use of the app upon randomization to that group. The waitlist-control group will follow the same procedures one month later. Participants/couples randomized to the intervention arm will have access to the intervention app for two months (ie, day 1-60) while those assigned to the waitlist-control group will have access to the app for one month (ie, day 31-60). All participants in the randomized controlled trial will complete a short follow-up survey at month 2 and a brief exit interview.
