Home pet is used to farm home coins. Home coins can be used to buy items at the pet home shop. Purchasable items such as orbs.
Trials > pet home
How to play at the pet home is quite easy, we only need to click the poke ball at the bottom right to create a pet. Then press the pokeball in the middle to hatch pet from the poke ball. Pet will give you home coins every few seconds.
Then join the pet by shifting the pet to the same pet. The pet that you join will change and generate more home coins