Downloads:

Download for Android

You can install this app directly from this page, as it is a PWA:
INSTALL

An app with Home Widget is in the pipeline but at the moment there is no app on the Play Store.

Download for Windows

You can install this app over this webpage as PWA:
INSTALL
Or download it from the Microsoft store:
DOWNLOAD

Download for iOS

You can install this app over this webpage as PWA:
INSTALL
There is no app on the store, as it is too expensive.

Download for Symbian

Symbian does not support PWAs, but you can download the .SIS from the old webpage:
WEBPAGE
Note: The viewer still works for shared calendars!

Download for Linux

Meego, JollaOS and other OSs should be able to install PWAs directly from this page:
INSTALL

Download for Others

If you are not using any OS from the list, you can try to install it as PWA or bookmark this page:
INSTALL

Select a device where you want install or use this app.Select your Operating System.Download and/or Install App.

Return to device selection
SYMBIAN
Symbian Webpage
WINDOWS
Windows Phone Webpage