In this Friday, Jan. 14, 2011 photo, Marty Tenenbaum, a ...

Paul Sakuma | published: January 16, 2011

In this Friday, Jan. 14, 2011 photo, Marty Tenenbaum, a survivor of the skin cancer melanoma, shows off his free app on his iPad in his Palo Alto, Calif., office. Tenenbaum, 67, is launching a free app with Cancer Commons, a set of online tools that help professionals study the disease and help with better treatments.