Amazon's flawed cloud app won't let you backup your files

Amazon launched new iOS and Android apps to access files stored on its Cloud Drive service, but don't expect to get too much from the experience. Even though the Cloud Drive apps complement Amazon's affordable unlimited digital storage, the implementation lacks a post-PC strategy. Unlike competing apps from Google, Microsoft and Dropbox, Amazon's app is read-only, lacks the ability to automatically sync content from your phone and denies users the ability to manually upload locally stored files