Add CalDAV calendar on iPhone / iPad

These simple steps show how to add an CalDAV calendar on iPhone / iPad.

How to add CalDAV calendar on iOS

  1. Install OneCalendar

    Download OneCalendar from the store and install it on your device.

  2. Goto OneCalendar Menu

    Select the hamburger menu icon on the top left.

  3. Select Accounts overview

    Select the option "Accounts" in the menu.

  4. Select Add account

    Click on the "+" sign to add a new account.

  5. Select Account type

    Click on the "CalDAV" account type.

  6. Enter credentials

    • The username needs to be filled with your CalDAV username
    • For server you can just enter the servername. It will automatically try to resolve your settings using HTTPS.

  7. Advanced settings

    Click on 'Advanced' to make the advanced settings available.

    • By default OneCalendar tries to autodetect all available calendars. If this does not work and you have multiple calendar URL's you can force this by changing the Server URL Type to "Fully qualified URL" and add them as multiple Calendar accounts.

Possible errors