In this article we take the novel step of bringing together recent scholarship about mobile media and communications with new ethnographic research and scholarship about mobile self-tracking. The correspondences and entanglements between mobile media and self-tracking technologies, and scholarship, we argue, are usefully considered in relation to each other both empirically and theoretically. Indeed, we propose that the convergence between self-tracking and mobile media means that we will increasingly need to account for their entanglements in mobile media research, and that there is therefore a need to explore the implications of taking the new step of approaching self-tracking research through the prism of mobile media scholarship. © The Author(s) 2017