The app has an 85 percent accuracy rate according to Zouridakis, which is on par with what a biopsy will give you. Sure, the dermoscope itself is a hefty $500 add-on, but the peace of mind you'll have knowing if that brown mole with the hair growing out of it is actually cancerous or not makes it worth it.
This isn't the first time we've seen a cancer-detecting iPhone gizmo. Back in 2011, Harvard and MIT scientists developed a $200 handheld scanner that used antibodies and magnetic particles extracted from a patient to test for cancer cells. The scanner had a 96 percent accuracy rate, but it also took about an hour to get results. The DermoScreen app only takes seconds. However, it is limited to scanning for melanomas.