Box for iPhone and iPad allows you to sync your files between any number of devices using up to 10GB of free storage. With a mobile-friendly interface, tools to upload and sync photos easily, and a number of other useful tools unique to the iPhone and iPad, Box is a great addition to any iOS device that does not already have a cloud storage solution in place.
After installation of Box for iPhone and iPad, you'll need to register an account or log in. There are no direct upload buttons in the app other than to move or take photos and store them in the cloud, but you can connect your Box account on a desktop or laptop and start backing up files there. You can also open any file you download in Box while using your iOS device, and there are a number of powerful syncing tools in the preferences. While Box offers a decidedly stripped down interface compared to some other cloud storage tools, it beats a lot of the competition by offering more storage. By default you receive 10GB of storage for free before a paid account is required.
If you are looking for a good cloud storage solution for your photos and iCloud isn't cutting it, consider Box for iPhone and iPad. While it doesn't offer the same depth of integration as Apple's built-in cloud tools, it is a very effective and generous free storage solution for your iOS device.