I've been making Dr. Seuss blocks willy nilly for quite some time. This Saturday is the church quilt day so I'm bringing my blocks and putting them together. The blocks are in 3 categories: wonky, 9-patch, and pinwheel.....all the same size. I have 40 blocks (but I'll make 2 more to make it 6x7). Is there an app to help me arrange the 3 categories evenly throughout? Thanks in advance.