Cernoval is a cloud-based diagnostic imaging service and archival portal for medical images. The service corrects, aligns, combines, and stores images from low-cost smartphones and digital cameras to facilitate spatial and spectral comparisons in a time series. With this service, users can make rapid assessment of changes in the skin and make appropriate and timely decisions. Cernoval has the potential to enhance patient care and drastically reduce health system costs through early diagnosis. This will avoid costs for insurance companies and will create new revenue streams for physicians.