Customizing the "Add to Calendar" button to fit your own language is very easy with AddEvent. Your events can be added to Apple Calendar, Google Calendar, Outlook, Outlook.com, and Yahoo Calendar. Mobile devices like Android, iPhone, Samsung, and Windows are supported too.
Below you will find the translations of the "Add to Calendar" button.
This tool provides a quick and effortless way for your users to add your events to their calendars. When you add an “add to calendar” button to your website, you increase the likelihood that your users will add your event to their calendars by reducing the time and effort required to do so.
They will simply click the button, choose their desired calendar, and presto - your event is on their calendar! (Which, by the way, users view 12 times/day on average..). We make it easy for you to make it easy for your users, and more of your events on their calendars result in increased attendance to those events, which means good things for your company.
Documentation: Add to calendar button