Overlog (by Netguru) is a convenient tool for iOS app testing and debugging. You can easily attach Overlog to iPhone and iPad apps. In just a few lines of code and a few of minutes, the debugging tool will be installed and ready to use. Try Overlog yourself and see how it will fit in with your project.
We built it because we needed it.
Super helpful for QAs
Pros:easy setup and pleasent UI
Cons:another lib for your project, but you can opt out in release builds