That’s a great idea,
For now what you can do is to email the photo to your phone, save it to the camera roll, and add it to keepyAmanda commented
I would like to be able to have the original image on one device, then upload from another. For instance I have alot of saved images from my sons apps off of my kindle fire, but when I try to upload the pic to keepy directly from my kindle I can not see the properties from the image I'm uploading. So I cant add the date they were made or from what game the pics came from.