I have a deal aimed at developers today called The 8 For 8 Design Bundle. It's a collection of eight UI kits all designed iOS 8. Combined, it includes more than 700 hand-crafted UI elements, all of which were designed to meet Apple's Human Interface Guidelines for iOS apps. Because they were designed for iOS 8, they include new features such as widgets, updated keyboards, and more. There are examples of all of the kits on the deal listing, and you can get it for $24.99 (regularly $59).
Check It Out: 8 UI Kits For iOS 8: $24.99