Okay, what we have here is a pretty severe case of Thread Necromancy. Note that the post immediately preceding today's posts is from over FIVE YEARS AGO.
The first post today is an app developer recommending an app as the best for this task. It's probably HIS app, of course. And he bungled the URL, it's got http in it twice and an embedded space. Oh, and it points to the Google Play Store. Meaning it's an Android app. I can absolutely guarantee you that an Android app is definitely not the best way to move pictures between two iOS devices.
The last poster pretty much nailed it, by the way. If both devices are using iCloud in the same way you should be able to just grab photos from the combined "My Photostream". If you're using the latest and greatest approach, where all your photos live in iCloud, then they'll be in the "All photos" album on both devices already. If both devices are using iCloud but not in quite the same way (I'd up-converted one but not the other, for a while, before installing 10.10.3 on my Mac), just use the "Shared" tab in the Photos app, set up a shared album (I called mine "Xfer"), don't actually share it with anyone else, don't make it visible on the web (thus, you're the only one who can get to it), and then you can share pictures to it from one device and save them off on the other..
And if iCloud is not working, or you avoid it for, I don't know, religious reasons or some such, use Dropbox - use the Dropbos sharing extension on one device, from Photos, to share/save into Dropbox, then use the Dropbox app on the other device to save the pictures into your camera roll.
Or, if AirDrop is working quickly and reliably for you, you can use that, too
