What the app should imitate:
Without a cable, iTunes or extra software downloaded on your computer, this app should allow you to transfer photos & videos between 1) device and computer, 2) iOS devices (iPad, other iPhones, etc) on the same wi-fi network.
For the perfect example, download this app from the app store:
Simple Transfer - Wireless Photo & Video Backup
...and test it out. I want you to simply copy this APP.