WHEN RAUL GUTIERREZ’S son was younger, he came up with a great name for his father’s smartphone. “He’d call it the everything machine,” says Gutierrez, founder of childrens’ app company Tinybop. “Because to him it could do everything.” The kid was onto something. A smartphone really is an everything machine. It’s a phone, a camera, a movie screen, and so much more, stuffed into a glassy rectangle that fits in your pocket.