Mobile MIM, made by MIM Software, can turn an iPhone or an iPad into a diagnostic medical instrument. It allows physicians to examine scans and to make diagnoses based on magnetic resonance imaging, computed tomography and other technologies if they are away from their workstations.

The app comes in two versions: Mobile MIM, for physicians, and VueMe, for patients. Both are free, though MIM Software charges on a pay-as-you-go basis for storing uploaded scans on its servers, and for letting people view them.

Mobile MIM is among a handful of medical apps that the FDA has cleared for diagnostic use. Many others will probably appear as more smartphones and tablets make their way into the pockets of doctors’ white coats or onto their office desks.