Individuals with long-term mobility disabilities are at increased risk of falls (Matsuda, Verrall, Finlayson, Molton, & Jensen, 2015). However, fall risk screening tools are typically designed for individuals experiencing normative aging (Ambrose, Cruz, & Paul, 2015). Consequently, most adults with mobility disabilities who use wheelchairs do not undergo comprehensive fall risk screening or receive targeted prevention strategies, leaving them at high risk of falls and loss of independence (Rice, Ousley, & Sosnoff, 2015). To address this need, we developed Steady Wheels – a custom-designed, fall risk mobile health application for adults with mobility disabilities who used wheelchairs. We demonstrated preliminary evidence that embedded sensors within smartphones could quantify seated postural control. However, we discovered that there is a there is a lack of consensus regarding fall risk factors and outcomes for older adults who are non-ambulatory, which inhibited our ability to validate and further develop the app. We conducted interviews with subject matter experts to better understand multifactorial risk factors among the target population and how the SteadyWheels could be used as a clinical tool.