A fascinating conversation with Loren Brichter, the star iOS developer — author of the Twitter clients Tweetie for iPhone, iPad and Mac, which Twitter later bought and rebranded as its official clients.

Loren invented the pull-to-refresh gesture, which has become the de facto standard on mobile platforms.

His approach to building apps is utterly perfectionist. In the interview he also talks about Letterpress, his new game. Its popularity is so high that Apple’s Game Center can’t handle the flood of requests.