AP StyleGuard is an automated style-checking tool for use in Microsoft Word and Microsoft Outlook and is managed by Tansa in collaboration with The Associated Press.

StyleGuard 4 works with:

Word on Mac (Microsoft 365)

Word on Windows (Microsoft 365)

Word on the web

More information is available here:

https://appsource.microsoft.com/en-us/product/office/WA200001494?tab=DetailsAndSupport