The level and experience value of ShootingStar (http://shootingstar067.com/) is a non-official application to be backed up to Dropbox.
I'll write again because something important. Unofficial app.
You can back up by Export experience value from ShootingStar.
To this application you're using the Dropbox SDK. Dropbox SDK has been released under the MIT License. Also, Dropbox SDK uses json-simple, the HttpMime. These libraries have been released under the Apache License v2.0.