Are you trying to conceive a child or hoping for a particular sex? Then the Conception Fertility Calendar app for Android might be able to help.

This app not only tracks which days you have the best chance of conceiving, it also projects the days you are most likely to conceive a boy or a girl. The Conception Fertility Calendar Trial app is very easy to use–there’s just one screen of information, and you only have to set it once per month. The app automatically notifies you on the days that are best for conception, so you don’t have to check it every day.

This is a free trial version that will have reduced functionality after 30 days. The full version, Conception Fertility Calendar, is available for purchase on the Amazon Appstore.