Noteshelf: Backup and Sync in Noteshelf for Android
1. Open Noteshelf and click Settings at the upper left corner.
2. Select Cloud & Backup in the pop-up box.
3. Enable Backup over Wifi only if you like to sync the changes when online. The android version of Noteshelf supports backup to cloud services like Dropbox, Google Drive and Evernote. After you linked your account, click Done.