YouTube is releasing a child-friendly app aimed at bringing kid-appropriate content to mobile users. Designed for smartphones and tablets, YouTube Kids will feature original content from DreamWorks TV, Jim Henson TV, Mother Goose Club, Talking Tom and Friends, and more. And programs from National Geographic Kids, Reading Rainbow, and Thomas the Tank Engine will provide hours of free babysitting. "We want kids of all ages—and their grownups—to enjoy our playlists and spark their curiosity to go out in the world and learn more," said Michelle Sullivan, National Geographic Kids' Vice President of Digital.