“Hello, World.” is the first line of code a developer will write. And an app can change the world. For Apple’s much-hyped annual developers’ conference, we talked to our audience in their language, copywriting our version of Swift code and getting a hell of a reaction in return.

 

We wrote 2000 lines, each based on a real app. We filled a 25 metre poster, designed event invites, emails, keynote visuals, entry cards, signage and even babygros. Our audience paid us back with everything from conspiracy theories and countdown timers to excitable tweets and elaborate manicures.