A solid 4/5. I dislike that it has a decent amount of ads (long ones are optional for rewards and I don't feel it's overkill) and because the devs want you to see these ads the app necessarily needs you to be online. Can be frustrating how sometimes pictures can have details that you need to color which even with good eyes you almost NEED to zoom in to see, but in some ways allowing this detail in images is a positive. The app seems to frequently be updated, massive library of images. Good app.