Straight answers about how Naevus works.
Yes. Naevus is a non-profit project — no fees, no ads, no upsells.
On 656 unseen, biopsy-confirmed clinical photos it reaches about 0.80 AUC overall (0.76–0.86 across skin tones), independently verified in July 2026. That's helpful for triage but imperfect — it can miss cancers and flag harmless spots. It is a screening aid, not a diagnosis.
No. Nothing here replaces a professional exam. Use it to decide when to get checked, and always see a doctor for anything concerning.
Your account and photos are stored securely for your mole tracker. You consent on sign-up, can delete everything anytime, and we never sell your data. The quick check needs no account.
Good, even lighting; in focus; the spot centred and filling the frame. The app will warn you if a photo looks too dark, blurry, or unclear.
It's designed to work across skin tones, but validation on diverse skin is still limited — another reason to see a doctor for anything worrying, whatever your skin tone.