[1] Starting November 8 2014, Microsoft office featured improved function on Android tablets.
[2] You can easily manoeuvre all the applications and use all the editing tools for free.
[3] Microsoft Office has also touch-optimized Office apps for Windows with Windows 10.
[Source] http://www.gizmodo.com.au/2014/11/microsoft-office-just-got-way-better-on-the-iphone/