DermoMap, is the latest iPhone/iPad dermatology application which helps in recognizing skin conditions.

DermoMap which is now available in English and Spanish, is an interactive tool and helps general practitioners and nurses make a diagnosis. Medical students can also benefit from this tool.
The information available is updated periodically. Patients can compare their symptoms with photographs of the affected area of the skin with the high resolution images available on this application along with description of almost 95% of skin diseases and arrive at a near-perfect diagnosis.
Source-Medindia