The first and only internationally certified contraceptive app is now awaiting approval by the U.S. Food and Drug Administration. If approved, Natural Cycles would provide Americans a government-approved drug-free and therefore side-effect-free alternative in a market saturated with hormonal and abortive birth control. It all started when 32-year-old nuclear physicist Elina Berglund Scherwitzl, who was on the Nobel Prize-winning team that discovered the Higgs-Boson particle, “was looking for a hormone-free alternative contraception and we weren’t happy with what we found on the market,” said Dr. Raoul Scherwitzl, Berglund’s husband, in an e-mail interview. “Elina…decided to apply her mathematics expertise to...