We look at our phones now more than ever, which means we spend a lot of time looking at app icons — some even become seared into our minds. So, what makes an app icon worthy? This week, Chappell Ellison and Nathan Burge chat with Jim Nielsen and Michael Flarup, who wrote an entire book dedicated to showcasing the power of app icon design. Jim and Michael share the history of app icons, their impact on your brand, and why they wanted to write a book on the topic.