Simple, but incredibly useful!
This is the perfect way to record information about sights you photograph on vacation, the names of all the people in a group shot, information on a product you photographed to research later, or anything else about the content of a photo that you might otherwise forget.
I'm delighted to have found it and I hope the developer will keep it updated as iOS evolves.
Finally!!
Make sure you activate and touch the edit button instead of the arrow up button to add keywords.
I love the program!!