Console allows you to view system warnings and notifications that are generated by your applications. These messages are not normally visible, but are useful to those who are debugging applications, reporting bugs, or just want to know whats going on underneath the shiny iPhone interface.
The application is basically a mobile version of the console that is part of Xcode for Mac OS X. It features a case-insensitive filter and copy/paste functionality, as well as portrait and landscape orientations.
This app is a must-have for developers, and best of all, its free! Enjoy!