This app claims to be as effective as the pill
![This app claims to be as effective as the pill](https://thenypost.files.wordpress.com/2017/09/170914-menstrual-cycle-app-01.jpg?quality=90&strip=all)
A contraceptive app is “as effective as the Pill,” according to a new study. Natural Cycles uses a woman’s temperature each day to track a woman’s cycle – and predict the days that are safe to have unprotected sex. A study, published in the journal Contraception, found it was 99 percent effective under perfect use...