There is an app for assistance in skin cancer detection (SkinIO) but of course it’s more limited by the cellphone’s camera vs. the device in the OP. I can see both approaches co-existing, especially as SkinIO’s database expands and mobile phone cameras and AI improve. But it would be great to have the professional device become cheap and small enough that it can be a phone accessory, or perhaps phones can pack more sensors if it somehow makes sense (ie if they can augment phone functionality in other ways).

Thanks for leaving the comment, because it was my first thought too.

What's peculiar is its accuracy doesn't appear to be much better than a visual only app (based on a quick google of iphone app accuracy levels).

Could be similar to the 'should self driving cars be visual only' debate - it might seem intuitive that more data sources should improve results, but in practice it's not necessarily the case.