OvuView relies on several different fertility methods, including timing of your period and body temperature (meaning you use a thermometer to take your temp and then enter it), plus cervical mucus levels, which are important for gauging fertility because women tend to produce more of it before and during ovulation. The app will then lay out all the data in a chart, so you can see your symptoms over time, including when you’re likely to ovulate.

Also Enjoy: Reinventing Sex During Pregnancy & Throughout Motherhood