“…Mobile apps have been evaluated and optimized for use in smoking cessation [37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60], but few randomized trials have been completed. In the school setting, we identified no completed randomized trials and few app-based studies beyond our own research [34,36].…”