I'm working on the release of version 1.9 of The Graphics Codex. The new features will be available on all supported versions of iOS, which means iOS 7 back through iOS 5.1. So, even iOS 5.1 and iOS 6.x will look like iOS 7! I've wanted to implement a cleaner UI for a long time but felt that keeping the UI consistent with the latest version of iOS was important initially.
The new version contains interactive graphs and new graphics content as well as the new interface. It has the same fast interface, crisp text layout, and searchable index as the previous versions. All of the content is in the app, so that it works without a network connection.
Now that the iOS feature set is highly polished, I'm also looking at solutions for other platforms like Android. I'll announce plans once I've worked out the technical details and know exactly how those versions will work.
Morgan McGuire is a professor of Computer Science at Williams College and a professional game developer. He is the author of The Graphics Codex, an essential reference for computer graphics that runs on iPhone, iPad, and iPod Touch.