According to Society of Critical Care Medicine (SCCM), nearly 6 million patients are admitted to the intensive care unit (ICU) each year in the United States. An ICU admission and stay of a critically ill adult patient is a stressful experience for families. They are at risk for developing Post Intensive Care Syndrome-Family (PICS-F), a syndrome composed of symptoms of depression, anxiety, post-traumatic stress, and decreased quality of life. Although, family centered care guidelines have been established, interventions aimed at preventing PICS-F are lacking for these busy and highly stressed families. Cognitive behavior therapy (CBT), delivered by a mobile phone app, has been reported to decrease these symptoms in some populations. Subsequently, our focus is investigating the feasibility of using a CBT with family members of critically ill patients. In preparation for enrollment of family members to the study, research was undertaken to guide the development of instructional materials for using a CBT intervention delivered via smartphone technology. Considerations in developing the instructional materials included, sample characteristics, ICU setting, and technological factors. Creating the material consisted of acquiring general knowledge of the app, selecting appropriate features, and synthesizing the content into instructions appropriate for the anticipated sample. Kent State University College of Nursing faculty and the smartphone technology company (PACIFICA) served as collaborators throughout the development. The final product, a brochure with a detailed informational sheet, will be provided to family members during recruitment to the study and was approved by the Institutional Review Board (IRB) of Summa Health System.