The IKNetworkActivityManager class simplifies work with UIApplication network activity indicator. It turns your networkActivityIndicatorVisible = YES/NO code to add/removeNetworkUser:, so you don't need to remember objects that can use network anymore.

The IKConnectionDelegate class simplifies your NSURLConnection-related code by using GCD and blocks. You just need to
provide completion block and block that is executed during receiving data.

A UIButton subclass that mimic the "BUY NOW" button on the iOS App Store.

Easily rearrange the UI controls of your view by describing the new layout in a different NIB.

MAZeroingWeakRef is a library for using zeroing weak references in retain/release Cocoa and Cocoa Touch code. These are references which do not keep an object alive, and which automatically become nil once the object is destroyed.

MAZeroingWeakRef does not work under Cocoa garbage collection. The built-in __weak specifier exists for that, although it is used somewhat differently.

The API is simple and mostly self-explanatory from the header file. Note that cleanup blocks are only needed for advanced uses when you need to take more action than simply zeroing the reference when the target object is destroyed. Be sure to heed the warning in the header about not doing too much work in the cleanup block.

A progress bar class with a HUD appearance and the ability to animate to progress values. This progress bar class is built from two CALayers which would animate to the next progress value instead of simply jumping.