When comparing Office 365 vs iXalendar, the Slant community recommends iXalendar for most people. In the question“What are the best calendar apps for iPhone?” iXalendar is ranked 13th while Office 365 is ranked 17th. The most important reason people chose iXalendar is:
…makes it easy to see all your appointments.
Specs
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Pros
Pro Easy to transition from MS Office
Office 365 is laid out the same way with a similar ribbon interface that will be instantly comfortable to long-time Microsoft Office users.
Pro Excellent integration and compatibility with MS Office desktop applications
Pro Allows for real-time collaboration
Multiple people can work on the same document at the same time.
Pro Speech to text dictation
Linux never got it together
Pro No installation required
Pro Clean, uncluttered interface
…makes it easy to see all your appointments.
Pro Gesture support
In order to add events and navigate through the calendar more easily, a lot of gestures are supported.
Cons
Con Proprietary
Uses proprietary software.
Con Dependant on having an Internet connection
Con Cloud dependent
Does not edit local files, they have to be synced first.
Con Unusable for business in the EU
Cloud applications are mostly incompatible with the EU general data protection regulation.
Con Has only a fraction of Microsoft Office functionality
Office 365 is not a complete replacement for Microsoft Office. The most advanced functionality still can only be found on the desktop.
Con Expensive
$35/user/mo.
Con No task features with free version
In order to access task management features, the paid version must be bought.