I used an application on my phone to track periods, sex, and ovulation. When it said I was ovulating, I initiated the deed, which is rare in my marriage. Currently 26 weeks with a pretty little girl.
I tried that when I got pregnant the first time but I took my last test today but the calendar said I am suppose to ovulate tomorrow just want to see did anyone get pregnant by using the calendar....
you can use them but your better of using them in conjunction with other mthods as well, like opks :)