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Show HN: I'm a dermatologist and I vibe coded a skin cancer learning app

(molecheck.info)
422 points sungam | 1 comments | 07 Sep 25 10:38 UTC | HN request time: 0.202s | source

Coded using Gemini Pro 2.5 (free version) in about 2-3 hours.

Single file including all html/js/css, Vanilla JS, no backend, scores persisted with localStorage.

Deployed using ubuntu/apache2/python/flask on a £5 Digital Ocean server (but could have been hosted on a static hosting provider as it's just a single page with no backend).

Images / metadata stored in an AWS S3 bucket.

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jjallen ◴[07 Sep 25 13:21 UTC] No.45157933[source]▶
Very cool. I learned a lot as a non dermatologist but someone with a sister who has had melanoma at a very young age.

I went from 50% to 85% very quickly. And that’s because most of them are skin cancer and that was easy to learn.

So my only advice would be to make closer to 50% actually skin cancer.

Although maybe you want to focus on the bad ones and get people to learn those more.

This was way harder than I thought this detection would be. Makes me want to go to a dermatologist.

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alanfranz ◴[07 Sep 25 20:09 UTC] No.45161695[source]▶
> So my only advice would be to make closer to 50% actually skin cancer.

If I were to code this for "real training" of a dermatologist, I'd make this closer to "real world" training rate. As a dermatologist, I'll imagine that probably just 1 out of 100 (or something like that) skin lesions that people could imagine are cancerous, actually are so.

With the current dataset, there're just too many cancerous images. This makes it kind of easy to just flag something as "cancerous" and still retain a good "score" - but the point is moot, if as a dermatologist you send _too many_ people without cancer to do further exams, then you're negating the usefulness of what you're doing.

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1. mewpmewp2 ◴[07 Sep 25 23:47 UTC] No.45163299[source]▶
It needs a specific scoring system where each false positive has a lower score drop, but false negative has a huge one. At the same time like you said positives would be much rarer. Should be easy to ask LLM to vibe code that so it would simulate real world and its consequences.