Inclusion Criteria:  Age 18 and above Must have access to either Google Play (Google LLC) or Apple (Apple Inc.) smart device Patients of the University of Virginia Adult CF clinic  Exclusion Criteria:  Unable to exercise based on PAR-Q survey Known physical condition that precludes exercise Pregnant, or trying to become pregnant Unable to provide informed consent Prisoners Does not own and feel comfortable using a smart device Unwilling to use smart devices for research purposes