Mac: Office 2019 versions of Word, Excel, PowerPoint, OneNote and Outlook. Office 2019 for Mac is supported on the two most recent versions of macOS.
Windows tablet: Office 2019 versions of Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access. Windows 10 or later required.
iOS: Office for iPad® and iPhone® requires iOS 10.0 or later. Office for iPad Pro™ requires iOS 10.0 or later. Office is supported on the two most recent versions of iOS. When a new version of iOS is released, Office’s Operating System requirement becomes the then-current two most recent versions: the new version of iOS and the previous version.
Android: Office for Android™ can be installed on tablets and phones that meet the following criteria: running any of the last 4 major versions of Android and have an ARM-based or Intel x86 processor. Support for KitKat devices will continue until June 2019.