Inclusion Criteria:  age 18 to 65 years opioid use disorder stepping down from inpatient detox services willing to engage in daily outpatient supervised dosing of B/N.  Exclusion Criteria:  cognitively impaired (Unable to complete consent quiz at 90% accuracy AND MOCA < 25/30 relative exclusion requiring PI approval, absolute exclusion for MOCA<21/30) (Nasreddine,et al., 2005) homeless without any expressed interest in attaining housing after detox discharge reporting active homicidal or suicidal ideation with an imminent plan current mania or psychosis expected incarceration in next 3 months (those that are incarcerated during the study will be removed from the study) unable or unwilling to use a mobile device medical contraindication to B/N unable to complete baseline assessments unstable medical illness who expect hospitalization in the next 3 months pregnant women (if a patient becomes pregnant while participating in this study, they will be withdrawn) prisoners court-ordered individuals is non-English speaking