LogPolice is an inspector for the devices internal log messages. It is a tool for testing and debugging applications in cases where the iPhone Configuration Program is not comfortable enough or not available.
The application has a buffer for up to 1500 log messages, which can be filtered by log level and by sender. As an app tester, you can e-mail the filtered log messages to the app developer.
In the free version, the mail functionality is restricted to once per 24 hours. The extended version, which can be acquired as an in-app purchase, removes this restriction and adds some other goodies.
*** Update 2013-09-11 ***
There will be no further development of this app, because access to log messages is no more possible with iOS 7. *** This app does not and cannot work on iOS 7. *** For users of older devices, we keep the app in the App Store. The upgrade to the extended version is now free.