Runs on my OS, but has problems

This wasnt my first choice for a pregnancy app, despite having used Woman Log Pro for nearly four years. It is the only app Ive been able to find that will run on iOS5. Thats right, I have the original iPad. Its not slick, but it gives me the basic information Im looking for.
I have the same complaint as nearly everyone who has reviewed the app: the first day of your last period and the date of conception are tied together on the same day. You WILL have to set them to the day you ovulated, and then youll have to add two weeks to the gestational week the app gives you if you want to be on the same page as your medical professional.
Irrelevant, but still funny: most of my in-app ads are for contraceptives.

TangoChick13 about WomanLog Pregnancy Calendar