What Google Says:
Quickoffice for Google Apps works on your Android, iPhone and iPad giving you a way to create and edit Microsoft Office files when you need to make a quick edit on the go and don’t have access to costly software.
Why You Should Use It:
Edit your files and documents anywhere using your mobile device with Quickoffice. You’re automatically connected to Google Drive so you instantly have access to all your stuff. Works with Word, Excel and Powerpoint files so you’re not just locked into the Google formatted documents.