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This is Scientific American 60-Second Health. I'm Katherine Harmon. Got a minute?

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New smartphone apps now let you snap a picture and upload it for a skin cancer check.

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Sure sounds a lot easier than trekking into the dermatologist, right?

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But a new review of these apps finds that most of them are not very accurate.

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Dermatologists uploaded 188 images of skin lesions to four different app-based services.

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The apps, which are unregulated, mostly use algorithms to judge--often in less than a minute,

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whether the spot is benign or something to get checked out.

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Three of the four apps failed to catch at least one-in-three known cases of melanoma.

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The apps also falsely identified plenty of benign growths as possibly cancerous.

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The findings are in the journal JAMA Dermatology.

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The fourth app, which did okay, actually used board-certified dermatologists to review images.

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It was the most expensive at five bucks per assessment and took 24 hours.

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So next time you're worried about a mole, don't use an app, get an ap--pointment…with a dermatologist.

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Thanks for the minute, for Scientific American 60-Second Health. I'm Katherine Harmon.

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