Feasibility and Potential Efficacy of a Mobile App Series Based on Eye Movement Desensitization and Reprocessing: A Pilot Randomized Control Trial with Posttraumatic Stress Disorder and Comorbid Problems

Mobile apps are increasingly being used to help individuals manage symptoms of posttraumatic stress disorder (PTSD). A few preliminary studies suggest that apps have potential, but also face many challenges. Despite eye movement desensitization and reprocessing’s (EMDR) unique characteristics and its efficacy with PTSD, there has been no research regarding mobile apps based on this method. This pilot study examined the feasibility, safety, and potential utility of 4 apps based on EMDR, the Healing Trauma App Series (HTAS), designed for PTSD sufferers with comorbid problems such as somatic problems. Online advertising recruited 77 chronic PTSD/pain sufferers who were randomized to either the treatment group ( n = 38) or a waitlist condition ( n = 39). Participants in the treatment group were given the 4 apps, which comprise the HTAS series, and instructed to use them daily (“as needed”) for 3 months. Participants who used the apps for the treatment period experienced moderate reductions in PTSD symptoms (PTSS). The results were confounded by high attrition rates, a common problem in app research. Implications for future research and app design together are discussed. A larger-scale study of mobile apps based on EMDR, with some modifications to address the limitations encountered in this study, is recommended.