Microsoft recently updated its Office apps for Android smartphones and added compatibility with Dropbox.
The company announced Dropbox integration for its Office products earlier this month. Android users can now access Dropbox from Office apps to get to their files and folders; edit Office files directly from Dropbox and sync them across devices; and share new or edited files from the Office apps using Dropbox sharing tools.
Interested users will need both an Office and a Dropbox account in order to access these tools. Microsoft Office and Dropbox are free to download from the Play Store.