Full disclosure: I got pregnant with my second child using a fertility monitoring system as my method of birth control. So I was a little suspicious of daysy, a new fertility monitoring system that allows women to plan or prevent pregnancy by tracking their own fertility cycles. But then I did a little research, and quickly realized what a great method daysy could be for women like me, who hate using hormones for contraception. By analyzing your basal body temperature against data from millions of cycles, daysy takes the guesswork out of fertility management—leaving you with a hormone free birth control system that’s more effective than the Pill. Really.