Appearance is a clue.
Shape and consistency can be described with a seven type scale. Colour, frequency and associated symptoms add context. A single observation is rarely enough to understand a change.
EVIDENCE, NOT MAGIC
What a photo can and cannot say.
A picture may help describe visible features. It cannot diagnose a disease, measure a nutrient deficiency or decide a treatment plan.
Your baseline matters.
What is usual for one person can differ from another. The duration and pattern of a change often matter more than a one off event.
Some signs need care.
Blood or black tar like stool, severe or persistent diarrhea, dehydration and significant pain are reasons to speak to a healthcare professional promptly.
THE AI QUESTION
We will not pretend the demo has a doctor in the camera.
An image analysis feature would need validation, clinical oversight, explicit consent, secure handling and careful presentation of uncertainty. It is not active here. The current journal only stores user entered descriptions on the device.