Ultrasound? Fetal monitoring? Spectrometer? There's an app for that!: biomedical smart phone apps are taking healthcare by storm.

If you think your doctor is a mobile phone junkie now, you haven't seen anything yet. A profusion of new software applications, or apps, are either already here or coming soon to convert smart phones into biomedical devices that will play a larger role in healthcare. Engineers, computer programmers, medical professionals, and other researchers are jumping on the bandwagon to create apps and add-on devices, or peripherals, that turn a smart phone into a microscope, an ultrasound machine, or a heart-rate monitor, just to name a few.