Birth control app reported to Swedish officials after 37 unwanted pregnancies

Users of Natural Cycles, first app certified as contraceptive method in Europe, identified among people seeking abortions at hospital

A much-hyped birth control app has been reported to Swedish authorities after a hospital found 37 cases of unwanted pregnancies among women relying on the app for contraception.

Natural Cycles, a smartphone application that marries hi-tech algorithms with the old-fashioned rhythm method, last year became the first app to be certified as a contraceptive method in Europe. The app requires women to input their temperature every morning, then calculates the users' menstrual cycle and informs them when they can have sex without protection.