As per a Microsoft employee, the company added support for its shared calendars in Outlook app for
iOS., a long-requested feature for the app. This feature is now also available on Android along with Microsoft’s Calendar app for Windows 10.
However, it is not complete yet but the main functions are now available, as stated by Julia Foran, Senior Program Manager at Microsoft. She has explained in
a post on Outlook for iOS UserVoice page that in order to see the shared calendars on iOS or on Android, it is necessary for you to share as well as accept calendars from Outlook on the web.
She further states,
“If you’re sharing with edit access, at this point you’ll need to wait a little after initially accepting before you can edit the calendar. The updates are only available for view & edit permissions and coming soon for delegated permissions. Those are the big things we’re finishing in addition to adding ability to share/accept from any Outlook application.”
Google Calendar for Android and for iOS lets users view the shared calendars, and Apple allows iCloud users to share calendars through the Calendar app for iOS.