App: One Calendar
Developer: Code Spark
Genres: Productivity

The most popular app to view all your calendars like Google, Live, Outlook, iCloud, Exchange, Office365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, ownCloud and more. OneCalendar integrates all your calendars into an easy-to-read overview. View and manage all your appointments, events and birthdays.
  
OneCalendar is available on all platforms.

Release notes:
Fix Yahoo caldav calendar url