Before there was the iPhone, there was the Astrolabe. Is there an app for that?
They’re more than a thousand years old but all Astrolabes still work! What’s more, they’ll never be obsolete. And they will never run out out batteries. And they will never shatter into a middle pieces, forcing you to slouch back to the Genius Bar where you just had the thing replaced three hours ago.
(via Motherboard, with thanks to Mr. Pasternack)