MoodChem
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A neurochemical mirror

Decode what you feel.

Most apps ask how you feel. MoodChem tells you why — the chemistry and patterns underneath, without shame or clichés.

Decode what I'm feeling

A few states, decoded

What you feel
Jealous
What may be happening
dopamine prediction error + cortisol spike + narrowed attention
What you feel
Peaceful
What may be happening
parasympathetic settling, GABA on, cortisol low
What you feel
Attracted
What may be happening
dopamine anticipation + noradrenaline + attention narrowing
What you feel
Emotionally exhausted
What may be happening
nervous-system overload + depleted recovery chemistry
Read the chemistry library
dopamine
oxytocin
cortisol
serotonin
GABA
adrenaline

From the library

All pieces →
Why does rejection feel physical?
The brain regions that process social rejection overlap with those that process physical pain. This is why heartbreak hurts in the chest and being excluded aches in the body. It isn't drama or weakness — it's the architecture of a social mammal whose survival once depended on belonging.
Why anticipation can feel stronger than reward
Dopamine peaks during anticipation of a reward, not its receipt. The Friday-evening feeling is often more intense than Saturday itself. This is not a flaw — it's how the system motivates pursuit. Knowing this changes how you read disappointment: the dip after the event isn't proof the event was bad, it's the chemistry returning to baseline.
Why music changes body chemistry so powerfully
Music is one of the few inputs that engages reward, motor, memory, and emotion systems simultaneously. Predictable patterns release dopamine; resolutions you didn't quite expect release more. Slow tempos can entrain breath and heart rate; faster tempos lift sympathetic tone. A single track can re-cue the chemistry of an entire afternoon — which is partly why we return to certain songs in certain moods. The body remembers them as keys.

The more you check in, the more this mirror sharpens. Patterns surface. Your nervous system begins to make sense.

MoodChem is for education and self-reflection only. Not medical advice, diagnosis, or treatment. If you feel unsafe or unable to cope, please seek urgent professional help or contact local emergency services.