I've got one that I haven't used for awhile... it might be the maybe baby one too... wasn't that reliable tbh, for me anyway. I never got the full ferns only partial ones, I guess they may work differently for everyone?
*edit*
I just looked back at my charts when I was using it, when I conceived DD1 it looks like I got ferning on day 10 & 11 but looking at my temps I didn't actually ovulate until day 22

Edited by kyromaniac - 26 May 2013 at 10:49pm