We have plans to include an account backup/archive feature in a future update. If you are using the Pepperplate apps, all of the data is stored locally on the device and updated every time the app synchronizes to Pepperplate.com.
There are several 3rd party apps you can install on your mac or PC to back up Android devices.
Here is a good article with some ideas about how to back up settings and files from your device:
With the Pepperplate platform, all of the data is synchronized back to Pepperplate.com and available to synchronize each time you log in. It's still good to have a back-up copy of Android files on your computer as well.