“…While mHealth platforms range across a number of consumer products (e.g., smartphones, tablets, wearable sensors), the present evaluation focuses specifically on those made available for smartphones; Jones et al, 2015). Given the increasing prevalence and usage rates of smartphones, in particular, across a wide range of demographics (e.g., youth, racial/ethnic minorities, those dwelling in rural communities; Pew Research Center, 2017), smartphone applications are being developed as a novel method of extending access and delivering mental health treatment to traditionally underserved groups (Anton et al, 2016). Preliminary studies point to evidence for the acceptability of using smartphones to monitor mental health (Torous, Friedman, & Keshavan, 2014) as well as the feasibility and efficacy of delivering interventions on smartphones (Donker et al, 2013; Jones et al, 2014), however this body of literature is inchoate, precluding firm conclusions.…”