In this narrative review, we will present a brief overview of known disparities in children's language development based on socioeconomic status (SES) and efforts in the primary care setting to promote children's language development. Next, we will define mobile-health (m-health) and review the limited, published literature regarding the effectiveness of m-health interventions in promoting children's health, in general, and language development, in particular. Finally, we will discuss the potential role of smart phone applications to increase parental behaviors that promote their children's language development as well as challenges that should be addressed as the field of m-health continues to grow.