Not the twelve zodiac animals
These are twenty cards, not twelve, and they have nothing to do with the year you were born. They come from the day pillar — the two characters attached to the date of your birth. The first of those two is the character Korean saju treats as standing for you, and there are ten of them.
The second character either supports that first one or spends it, depending on how their elements meet. That split doubles ten into twenty. So each animal appears twice, once in each mode: the same temperament banked and the same temperament spent. Reading your card against its twin is usually more revealing than reading it alone.
Not a face reading either
Korea has a popular pastime called dongmulsang— matching someone's face to an animal. Puppy-like, cat-like, deer-like. That is about features, and apps for it want a photo. This is not that. Nothing here looks at your face, and there is nothing to upload; the only input is a date.
The practical difference is stability. A face-matching result shifts with the angle, the lighting and the day you took the picture. A card drawn from your birth date does not shift at all, which makes it something you can actually argue with.
What a card says, and what it does not
Each card covers how the temperament shows at work, how it shows with people, and where its strength turns into its weakness — every trait here has a cost written next to it, because a description with no cost is flattery rather than a reading.
It does not sort people into better and worse cards, and it does not predict anything. The day pillar is one of four in a full chart; a card is a sketch of one of them, not a verdict on a life.
Getting yours
The cards are written in Korean. Card addresses contain no birth date, so sharing a card does not pass on the date that was entered.