WatchieBesti is an Apple Watch app for kids and adults. A virtual pet lives on the watch and responds to real-world activity — steps and active energy read from HealthKit determine the pet's mood throughout the day. The pet starts as an egg, hatches after a few active days, and evolves through baby, young, and adult stages as cumulative activity builds up. The iPhone companion app shows the pet's current state and activity history. No accounts, no in-app purchases, no data leaves the device.
