I’m trying Inchworm on the 3DS since Flipnote is not available. It does have some nice features, like allowing up to 6 layers and different setting for the brush and the fact that you can actually pick colors. But I’m not a big fan of “one undo” and buttons that can’t be customized, or weren’t setup well. The selection tool also seems to be limited to just rectangular areas. I could see myself using it for sketching, but Flipnote was much more easy to work with, which is a must when working with multiple frames.