Instacube: a single-app smartphone

The Instacube is more or less a smartphone that only runs the Instagram app. And it has no keyboard functionality, so you can’t comment on images, or post your own. That’s handy, right? I mean, it might be second to Instacube, the almost-$70 magicians’ accessory that lets you pretend you solved a Rubik’s Cube, but it’s a strong second.