For Android the app is called Microsoft Office Mobile as the "official companion for you Android phone." It has already been installed over one million times and is compatible with Android 4.0 and later. It is free for home use only.You have to sign-in with ith a free Microsoft account to create, edit and save documents for home use. A qualifying Office 365 subscription is required to create, edit and save documents for business use
Ou can access, view and edit your Microsoft Word, Microsoft Excel and Microsoft PowerPoint When you make quick edits or add comments to a document, the formatting and content remain intact.
The app works OneDrive, OneDrive for Business, or SharePoint. You can resume reader where you left off or show presentation views.
You can create new Word and Excel documents on your phone.You can review comments that have been made in Word and Excel documents on your phone and add your own comments.
Requires a phone running Android OS 4.0 or later.
The iPhone/iPad version of Microsoft Office Mobile has the same features, is free for home use with a sign-in from a Microsoft account. A qualifying Office 365 subscription is required to create, edit and save documents for business use.