MacXDVD has released MacX MediaTrans (http://www.macxdvd.com/mediatrans/?pr), an iPad/iPhone content management solution for Mac OS X. It integrates with photo backup, music manager, video transfer and USB drive on demand and is designed to free up the space on an iPhone and iPad.
MacX MediaTrans supports two-way transfer between iOS devices and Macs. You can: create, delete and edit playlists; transfer video back and forth; back up photos; and even use an iDevice as a USB flash drive.
MacX MediaTrans requires Mac OS X 10.7 or above (including macOS Sierra), iOS 7 or above (including the latest iOS10), and iTunes 11.2 or above. It costs $29.95 for one Mac with a one-year free upgrade.