Apple's Airport Utility for iOS has been updated with iOS 7 compatibility, and 64-bit support for the iPhone 5s, iPad Air, and unreleased Retina iPad mini. The app lets users manage their AirPort Extreme Base stations and Time Capsules.
Airport Utility for iOS gets 64-bit support
The release notes don't offer much in the way of details beyond 64-bit support, so for sume users the only difference they'll notice is the new iOS 7-style flat app icon.
AirPort Utility is free for the iPhone, iPad, and iPod touch. It's available at Apple's iTunes-based App Store.