Everpix on iOS

Is anyone currently using the Everpix photo service? I'm really considering giving this a shot as a replacement for iPhoto and to be able to have all of my photos online and accessible from my Mac, my iPhone, and my iPad. I haven't been able to determine if pictures can be uploaded from iOS automatically in the manner that Dropbox does it, or if you have to manually choose which photos. Does anyone know, or have any experience with this app?