Delivering meditation training via mobile technology (e.g., smartphones) could dramatically increase access to potentially beneficial practices. The mobile delivery format also makes it possible to conduct large-scale research studies with participants located across the country and/or world. This study compared two versions of the Healthy Minds Program smartphone app in a sample of adults recruited entirely online. Specifically, we assessed the impact of Awareness and Connection training or Awareness and Insight training with a waitlist control condition. The data reveal substantial reductions in anxiety, depression and perceived stress after 8 weeks of using the app. We are currently preparing a manuscript for publication.