It sounds as if OneDrive and iCloud are the same kind of “cloud” storage. There are two ways to get Office on your iPhone: Tap the button below to install the new Office app for iOS that combines Word, Excel, and PowerPoint into a single app, which introduces new mobile-centric features to view, edit, and share files without the need to switch between multiple apps. I’ve heard of OneDrive, which is made by Microsoft, not Apple, I think. I have Excel 2013 at home on the desktop. Then, when I’m back home, I want to replace the now-outdated version on my desktop with the version that I kept up-to-date while I was on the road. I’d like to store the latest version of that file in some cloud, and then use Excel from my iphone while I’m on vacation, to keep it updated while I’m away from home. I use Excel to update a simple database stored on my desktop while I’m home. I need some basic help for a newbie who’s never used the “cloud” before, in any version.