I cannot tell you how much stress, anxiety, and tears the WRONG result from this app has brought to our family. I used it to check a mole from my father and the result was that it appeared to be "squamous cell carcinoma". Turns out its NOT. It was the worst month of our lifes because an app. I know the app says "its not a diagnosis". Fair enough. But you should NOT even use the word "carcinoma" without checking the patient in person. Apps like these should banned from the face of the planet. You have a moral and ethic responsability in everything you say to your users. Shame on you. Before considering spending your money in this, go see a real doctor and save yourself a lot of anxiety and stress.
Justapatient16 about Dermatology First Derm, v4.2.5