For participants, the interface and navigation buttons, as well as activation emails are available in the following languages:
- English
- Dutch
- German
- Spanish
- French
- Portuguese
- Italian
- Russian
- Polish
- Swedish
- Czech
- Lithuanian
- Slovak
- Romanian
- Hungarian
- Danish
- Hebrew
- Turkish
- Korean
Participants can set their language preference when activating the app or from the in-app settings menu post-activation.
Push notifications, email, and assessment content are configurable by users directly in the Castor platform in the language of their choice.