HIV is one of world’s most serious public health challenges. In the US alone, there are more than 1.1 million people living with this deadly disease, and 1 out of 7 of these people are not aware of their infection. Approximately 39,800 people were diagnosed with HIV in the US in 2016. Gay, bisexual, and men who have sex with men bear a disproportionate burden by risk group (1). mHealth interventions have thus arisen with an aim to improve people’s engagement in desirable sexual health services and behaviors like HIV testing, pre-exposure prophylaxis (PrEP), treatment of sexually transmitted diseases (STDs), and linkage to antiretroviral therapy (ART).