Photo Editor by Aviary
This app showed up when I googled Best/Top Photo Editors. It was the best one I tried out, easy to use, and follow instructions to get to the end result. I did watch a youtube before downloading it and that helped immeasurably.
One of the best features IMHO is that Aviary keeps the original and puts the edited copy right beside it in the camera roll.
For sure this is a best ever five star!
*****
MataHari303 about
Photo Editor by Aviary, v4.6.0