データ保管BOX is a productivity application developed by NTT DOCOMO INC. for iPhone users. The app offers an easy way to store and manage various types of data in the cloud, including photos, videos, music, and contacts, directly from your iPhone or iPad. With the app, users can save space on their device and have peace of mind knowing that their data is backed up and can be accessed from anywhere.

One of the standout features of this app is the ability to store up to 55GB of data, making it a great option for those with large files to store. The app is easy to use and can be downloaded from the App Store for free. Additionally, users can access their files from a computer or tablet, making it easy to share and manage data across multiple devices. The app also supports file and folder sharing and offline viewing.