The more they move, the more energy points they can use to care for their pet, as well as unlock additional activities and animals. Ages: 4 to 7. If you like, you can even grant your child a real-world reward (like a toy or an outing) based on tracked activity. Ages: 5 to 13. The Striiv also rewards more intense exercise by granting extra energy points. (The downside is its cost.) Ages: 8 and up. One drawback to the Zamzee is that it is no longer commercially available. It is provided through health insurance programs and medical centers. Ages: 6-12. For motivation, the Miiya offers kids “missions” to complete via physical activity. Ages: 4 and up.
