With a redesigned UI and new features, Box is a great cloud storage option (pictures)
This cloud storage app has all the basic features you would expect, but adds specialized file-viewing experiences based on the type of file you're looking at.
With Box, you can open a multipage PDF file and turn the pages as you would a book, with smooth animations.
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Navigation bar
Alternately, you can use the navigation bar at the bottom to skip around a PDF document, or drag your finger to scan for the page you want to see.
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Share your files
Whether it's a single file or a folder of documents, you can simply send a link to a friend or colleague via messages or e-mail. You also can set up the security features to let them open the file directly or require them to have Box (and a security pin) to open the file.
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Open files in other apps
Box has support for more than 50 apps, so you can edit your work in another favorite app, then save it to Box.
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Set your security every time
When you share a file, you can give people open access to the file or require them to be part of the team. Unfortunately, you can only set up a team of collaborators on the Web site, but not within the app.