Also it can supposedly help you work out the best days to DTD in order to conceive your preferred gender. I used a Maybe Baby when I was TTC baby number 2, but found it a bit unreliable as sometimes it would show no fern pattern and on a repeat test a few mins later the fern pattern would show up. By number 3 I didn't bother and instead followed my obstetricians advice about tracking vaginal mucus to predict ovulation.