Very good app to all important photos and documents on more than just a device to make available! The app runs after registration reliably without Abstürtze! The synchronization between the individual devices such as smart phone, tablet PC and work without problems! Wants or must have for any of the photos or documents on multiple devices available, this is an app that you can only know! The app can be downloaded for various operating systems down! And this for 0 €! The only requirement is an account with Microsoft!