Color

Depending on who you ask, the new photo app Color is life-changing, inspiring, frustrating or downright creepy. Founded by tech entrepreneur Bill Nguyen, who lined up $41 million in funding for the venture before you can say "Cheese," Color is not intended for solo use. The idea is for a bunch of people to simultaneously use their smartphones to capture photos, videos, and conversations into a group album -- all without the bother of attaching, uploading, or even identifying people as friends. Think of it as a visual social network, created by algorithms that take into account things like where individual users go, how much time they spend there, and what they're taking photos of. Ready to Color your world? Nguyen suggests downloading the app with a friend beside you. "Everything you see that they capture on their camera you'll have on your camera," he says. "It's a completely surreal experience."