When should you have a spot checked?
- A spot that changes in shape, colour or size.
- A new mole that looks different from the rest.
- A spot that itches, bleeds or does not heal.
A
asymmetry
B
irregular border
C
multiple colours
D
larger than 5 mm
E
evolution
Change is the signal to watch for most.
How it works.
Upload photos via the app
Take sharp photos of the spot, up close and from a short distance.
Review by a dermatologist
A BIG-registered dermatologist reviews your photos within 12 to 48 hours.
Result with treatment advice
You read exactly what it is and what you can do. Prescription if needed.
Every review is done by a BIG-registered dermatologist. No algorithm and no assistant: a specialist looks at your photos personally.
Medically reviewed by dr. A.M. van Coevorden, dermatologist

Want to learn to look first?
The Skin Cancer Guide 2026 is free: 46 pages on recognition, risk factors and protection.
get the free guideGood to know.
Mole check
from 39 euros