 Smartphone-based data collection from participants in the intervention arm will commence two business days following randomization, to allow for troubleshooting of device problems and participants increased familiarity with the eMOCHA interface. At scheduled data-collection times, the participants phone will generate an audible alert and the eMOCHA application will automatically launch. To protect confidentiality, every eMOCHA session will begin with a password-entry screen containing no other information. Frequency and length of EMA sessions will be dynamic over the course of the study in order to individualize the intervention and collect process data related to Aim 2. By default, participants will receive two prompts daily for the first three months of the study. Based on participant feedback, rate of EMA response and level of engagement in HIV care, the protocol may be converted to a maintenance phase of less frequent prompts after the initial three-month in-person study visit. 