“…In Switzerland, 17% of the population and 41% of young adults ages 20-24 years exhibit at least problematic alcohol use (Gmel, Kuendig, Notari, & Gmel, 2016), and heavy drinking remains the leading cause of mortality and morbidity in adolescence and early adulthood (Marmet, Rehm, Gmel, Frick, & Gmel, 2014). Technology-based alcohol interventions have been shown to be efficacious at reducing short-term risky alcohol use and alcohol-related problems in adolescents (O'Rourke, Humphris, & Baldacchino, 2016;Patton et al, 2014), but reviews also underline the unknown generalizability of current findings, since most studies have been conducted on student populations (Danielsson, Eriksson, & Allebeck, 2014;Donoghue, Patton, Phillips, Deluca, & Drummond, 2014;White et al, 2010).…”