Ya OK, I have to learn to be more specific.😊 I realize Microsoft does not make apps for iOS but other developers do make apps that integrate and work better with Microsoft's products.
What I meant is an app better suited to saving windows formats, but I guess Pages can do this as well. The Pages app saves Pages files by default which requires you to share the document to save it as a Word document. Other Work suites which are built more for Windows users will save Word documents by default if you also use Word to edit the documents on the PC as well. It may work better now, it has been my experience you will find formatting issues when converting documents between the different file types.