CloudOTP it is a two-factor-authentication app with cloud (Dropbox) backup

CloudOTP is based on RedHat's FreeOTP https://fedorahosted.org/freeotp/

With CloudOTP you can backup your tokens to your Dropbox account. Now you can be worrie-free if your phone is lost. CloudOTP backups all your tokens safely.

After adding your token, be sure to navigate to the Dropbox menu in the app, in which you can authorize CloudOTP to sync your tokens. All your tokens are saved with the AES 256 encryption standard so you will need to provide a secure password.

CloudOTP does not save anywhere your data. If you lose your password, your will have to sync all your tokens again.