Apple Is Rejecting Apps That Use Dropbox Functionality. One of my problems with Apple is their draconian attempts to control the user experience for the iPhone. Any app that wants to get in the iTunes store cannot link to third party apps that require a subscription. Excuse me? Whose phone is this anyway? So, if you use DropBox (and many lawyers do, or a similar service like Google Drive or PaperPort Anywhere), don't plan on sending documents from your iPhone to the cloud drive. I wonder if Apple permits sending documents to its cloud drive service? Just one more way Apple wants to limit your computing life.