waderoush writes: "What makes mobile apps like Any.do, Band of the Day, Flipboard, Houzz, Letterpress, Mailbox, Paper, Path, Pinterest, Pocket, or Snapseed so successful? It's their design, obviously. But the principles at work are hard to pin down — as Justice Potter Stewart once said about pornography, you know good design when you see it. This article offers a behind-the-scenes look at the creation of Mokriya Craigslist, a popular new iPhone app from Cupertino, CA-based design studio Mokriya. Co-founder Sunil Kanderi shares some of his team's design secrets, as well as early sketches and wireframes. Kanderi explains the method Mokriya devised for getting users to any sub-category in Craigslist's vast catalog in just two taps; how the app makes discreet use of color and animation; and most importantly, how it achieves beauty through invisibility. 'If you try to be too clever you can get in the way of the user’s experience,' Kanderi says."