Photo editor supporting "open in" import?

[asiga]

Hi,

I just installed GoodReader, but when I want to use the "open in" feature with a photo in order to edit it, the app list is empty. I tried several photo apps from the store, even Photoshop, but they won't appear on the "open in" list.

From what I've read, it seems Snapseed doesn't support importing through "open in" either

What's the most complete photo editor around that also appears in the "open in" list?

Thanks!