I enjoy the variety of images--except for the women who are skinny only and the use of stereotypical Native American cultural icons. I appreciate that the app allows me to "color within the lines" (not have one color "bleed" into the adjacent space), unlike in some other apps. It can be awkward, however, to try to magnify the portion of the picture being worked on without having the edges of the picture fly off the screen. Maybe this could be made easier?
RED4RK about Adult Coloring Book | COLORS, v1.6