My husband and I have been trying to conceive for a year now as of febuary. I got off of birth control febuary 2013 and my periods were always irregular when I got off the birth control! So the only way I could tell that I was ovulating was from evidence on my under garmets. We never conceived . In the beginning of December of 2013 I downloaded the <a href="https://play.google.com/store/apps/details?id=com.glow.android">Glow app</a> onto my iPhone and this morning febuary 10, 2014 I took a pregnancy test and it was positive! This is the best app in the world and would recommend it to anyone trying to conceive!