As of version 1.1, Survd has added survey-side support for a number of languages. Through application level settings, users are able to select which language they would like to use.
To install any of these languages, simply save the file to your computer then go to the Addons section of the Survd App and use the Import box to import it into your installation. Survd will take care of the rest. Once the import is complete, the language should be available in the Settings area.