Around the time Aperture became dead, I was looking for a photo editing app on the iPhone; three of my non-negotiable requirements: non-destructive adjustments, curves, and the ability to brush a mask for an adjustment. I found Snapseed which fulfilled these requirements. But of course, why did I get the idea for these requirements of mine? Aperture of course. Once you got used to the features of Aperture, you really don’t want to use a lesser app like Photos.