For Microsoft Office 365 computer, mobile apps are free to download and give you access to basically all of the Suite's programs, though the particular programs available to you are slightly different between Android and iOS, and between iPhone and iPad (though all give you Word, Excel, and PowerPoint).
Follow the following steps:
1. Go to the
Office.com/setup 365 portal page and sign in to your Microsoft account.
2. Select Install Office.
3. On Office 365 Home web page, select Install Office.
4. On the Download and install Office 365 Home screen.