The new Files app in iOS 11 lets you browse files stored on your device and on Dropbox—all in one place. From there, you can open, edit, move, rename, upload, create folders, and download files. And if you have personal and work Dropbox accounts, you’ll be able to browse both in Files.
Connecting your Dropbox account to Files extends beyond the app itself. This new integration also makes your Dropbox files available across the entire operating system. You’ll now be able to access files stored in your Dropbox account from supported third-party apps. So instead of jumping back and forth between apps, changes to Dropbox files opened in another app will automatically sync to your account.
You can download Dropbox from the App Store for free.