The Good: Box gives you 50 free gigabytes of space to store just about any type of document, and adds excellent viewing features along with group sharing and multiple levels of security. The Bad: You can't create groups for sharing (collaborative or otherwise) from within the app. The Bottom Line: Though it doesn't have every feature that we'd like, Box is an excellent choice for viewing, editing, and sharing your files securely in the cloud. Box is a free file-sharing and storage cloud app akin to Dropbox, offering several useful features and a clean interface that's incredibly easy to navigate. At the time of this review, Box is bumping up the storage to 50GB of free space for iOS users, so if you're looking for a cloud storage app, now is the time to grab Box.Though the app has been available for a few years now, the latest version of Box is a complete redesign of the interface for iOS devices, making all the most common actions easy to get to. The interface is so simple that it's almost completely self-explanatory. But when you first open the app, you still get a rundown of the main functions and minor interface elements to get you up to speed quickly.Managing your files Files you have stored on Box show up in a list on the main page. Here you'll be able to swipe to browse to a file, or use a search box at the top to zero in on a specific file immediately. You also can create folders to organize your documents any way you like. To manage and move individual documents, you can touch the file name to open up the preview page, then use buttons at the bottom to open the file in a supported app, make a comment about it you can share, send the file via e-mail or Messages, or use other common file actions like move or copy to clipboard.Alternately, you can manage your files directly from the main list. Simply swipe the file name to the left and you'll bring up buttons for sharing with others, downloading the file for offline viewing, changing the name of the file, or deleting it.Working with your content Box not only lets you store and share files; you also can browse and edit your content. The app will store just about any type of file, letting you view and browse photos, listen to audio files, watch videos, and also read through multipage documents. With images you can browse a grid or look at individual photos and swipe to move on to the next one. You can share single or multiple photos with others, and use the buttons across the bottom to open in another app, comment on it, and other common file actions.