Each child has their own Piri, and he grows from care: egg → chick (10 care) → owlet (30). Care comes when you accept a task (+2), when the child pets Piri once a day (+1), for 7 days in a row with Piri (+5) and for 6,000 steps in a day (+1, if the child's steps are counted). When Piri grows, the child sees him hatch or turn into an owlet.
The owlet doesn't grow any further — he learns tricks: one new trick for every 15 care after he became an owlet (the first at 45 care, all nine at 165): dance, ball, reading, exercise, flute, painting, juggling, a magic trick and a nap. The child sees “Piri learned something new!”, and on Piri's screen taps a trick to see Piri do it. Piri's card on your side shows which tricks he knows.
Piri is on the child's home screen; tapping him opens his screen: Piri answers every tap, and there's “Pet Piri” and how much care is left to the next stage. Care isn't Piri coins: it can't be spent or taken away, and Piri never gets sick or sad about missed days.
On your side: “Tasks” → “Jar” → Piri's card — the stage, the care, what Piri got today, and two switches: “Piri grows” (turn it off and Piri stays as he is) and “Steps give care”. The same is in the web cabinet at kidpair.net.