The fully-encrypted ProtonCalendar app is here.
Proton said on its official blog:
ProtonCalendar uses end-to-end encryption to keep all your events’ sensitive information private and secure. The event title, description, location, and participants for every event are encrypted on your device before they reach our servers, so that no third party (including ProtonMail) can see the details of your events. Only you will know your plans.
For more, click here.
