it was good at first but the coloring function is really glitchy especially where the slider is, the color option and overall aesthetic of the app is beautiful, though I do suggest fixing a few bugs like how the color goes anywhere but where you want it and that the zoom is extremely sensitive and tends to get stuck when I zoom in. of course this is just a suggestion and has only happened to my that I know of but I would look into that (if bugs fixed then I would recommend)
