The Rainbow application is a tool to transfer data from one cloud service to another.
Rainbow is available for iOS, Android, Blackberry and Kindle devices. A Mac version is also available. Please click on the images at the bottom of the screen to get to the corresponding store.
The iOS and Android versions are free of chanrge but they offer in-app purchases to enable extra features. On the other hand, the Blackberry and Kindle versions are paid applications.