Natural Cycles is a cycle and fertility tracking app that uses temperature and cycle data to show fertile and non-fertile days. The company presents it as a contraceptive app and states that the product holds FDA clearance as a birth control app. Measurements can be taken with the app alone or with a measuring device the company sells. The product is delivered as a mobile app with a subscription and is aimed at people who want to track their cycle or avoid pregnancy.
Natural Cycles is based in Stockholm, Sweden, and as a Swedish company it falls under EU data protection law. Its investors include several venture funds, and no majority owner is named. The website does not state where user data is hosted or whether a data processing agreement is published. FDA clearance concerns the product's regulatory status in the United States and says nothing about where data is stored. European organisations should therefore ask the vendor for the hosting location and the list of sub-processors.