ACRA (http://acra.ch/) is a nice little library that can be used in an app to log and post detailed exception reports containing Android version and device hardware details to online google doc spreadsheet. It works well, is easy to implement and has helped me in finding out that my app was running out of memory due to a memory leak on some devices after go live. Without it the reviews of the app would have suffered..
Not going to describe how to set it up as it is documented well on the ACRA website, but it comes highly recommended, I would never release an app on the market without this. See https://github.com/ACRA/acra/wiki/BasicSetup for basic setup