This is a pilot study looking at the feasibility of a mobile application (app) to collect data from active tasks (questionnaires, 6Mapp™, COGapp™, VISapp™), clinical magnetic resonance imaging information and conduct genome-wide association studies in subjects with multiple sclerosis. Participants will be self-referred to this study from different sources; patient advocacy groups, social media tools, clinicaltrials.gov, and flyers.