CocoaLumberjack is an open source, fast and simple, yet powerful and flexible framework that will help Cocoa developers to create their own apps for Mac OS X and iPhone with logging capabilities.
CocoaLumberjack is similar in concept to other popular logging frameworks such as log4j, yet is designed specifically for objective-c, and takes advantage of features such as multi-threading, grand central dispatch (if available), lockless atomic operations, and the dynamic nature of the objective-c runtime.
CocoaLumberjack is for you if: · You`re looking for a way to track down that impossible-to-reproduce bug that keeps popping up in the field. · You`re frustrated with the super short console log on the iPhone. · You`re looking to take your application to the next level in terms of support and stability. · You`re looking for an enterprise level logging solution for your application (Mac or iPhone).