The Calm App is dedicated to mindfulness, the power of a good night's sleep, and cultivating a healthier and happier life. With over 50 million downloads and over 700,000 5-star reviews, the Calm app provides guidance in meditation, relaxation, a restful sleep, video lessons on mindful movement and gentle stretches, as well as music to help you focus, relax or sleep.
https://www.youtube.com/watch?v=xlg052EKMtk
https://www.youtube.com/watch?v=fnO-lGEMOXk
The Headspace App is your personal guide to health and happiness. It can help you focus, breathe, stay calm, and create the conditions for a better night's sleep by practicing meditation and mindfulness. Headspace recently created a space for kids (and their parents) to enjoy fun, engaging activities that teach children the basics of mindfulness. They’ll practice breathing exercises, visualizations and even try some focus-based meditation. There are currently 5 themes -- Calm, Focus, Kindness, Sleep, and Wake-Up -- for three different age groups: 5 and under, 6-8 and 9-12.
https://www.youtube.com/watch?v=ZBnPlqQFPKs
https://www.youtube.com/watch?v=_mX4JBBIcBk
https://www.youtube.com/channel/UCwHO92Tu97JWHzl3RmadNug
https://www.youtube.com/channel/UCtJ6ylmIVLmxdycQvUQB6YQ
https://www.youtube.com/playlist?list=PLILNYFQjcXDl9229mHQ3Y6EOt4zGnAXdS
Encourage your kids to Stop, Breathe & Think with this fun and easy to use app—designed to help kids discover the superpowers of quiet, focus and a more peaceful sleep.
Smiling Mind is a unique web and app-based program developed by psychologists and educators to help bring balance to people's lives
Insight Timer is another web and app-based program that features guided meditations, music tracks and ambient sounds to calm the mind and improve focus, sleep and relaxation. I have linked the section related to children.