To change the language of the app, go to user settings (go to the middle of the 3 tabs at the bottom and press the small gear in the upper left corner). Here "change language" is one of the functions you can choose.
To change language in the web app you must click on the icon of the globe in the upper left corner of the front page, where you will be asked to enter your login information.
The Sculpto app is currently available in 2 languages: Danish and English.