Welcome to my first tip for iPhone developers.
If you have logging statements in your project for testing and debugging, you’ll want a way to turn them off for released code.
I have seen many complex solutions requiring custom macros and preprocessor parameters, most of them overkill IMHO.
The simplest thing to do that I have found so far is to use this technique.
Place the code-snippet in your project’s *_Prefix.pch file, continue to use the standard NSLog() macro.
NSLog statements will be automatically left out of projects compiled for release.
I hope this helps.