Natural Cycles broadens its contraceptive app by integrating with popular health wearables like Oura, Apple Watch, Garmin, and Whoop, shifting towards a more seamless and accessible user experience.
Natural Cycles is extending its birth control app by fitting it to devices many users already own, a strategy that now spans its own NC° Band as well as integrations with Oura, Apple Watch, Garmin and Whoop. The company’s latest tie-up with Whoop adds overnight skin-temperature sharing for current bands and bundles a year of Natural Cycles for eligible new users, further widening a distribution model built around convenience rather than new hardware purchases.
That approach is notable because Natural Cycles began with a much heavier user burden. Founded by physicists Elina Berglund Scherwitzl and Raoul Scherwitzl, the app originally depended on a dedicated basal thermometer and a strict morning routine. Over time, the company has moved from manual readings to automatic overnight measurements, first through its own devices and then through third-party wearables that can pass temperature data into the app. According to Inc, that progression has helped Natural Cycles lower the barrier to entry while keeping the underlying fertility model intact.
The regulatory record is equally important. Natural Cycles says its app is FDA-cleared and clinically supported, and the company has reported typical-use effectiveness of 93%. Its integrations have depended on device-specific clearances, which means each new wearable has required evidence that its sensors are reliable enough for contraceptive use. Inc reported that a predetermined change control plan, cleared by the FDA in 2024, has made it easier for Natural Cycles to validate new devices without restarting the regulatory process each time.
Garmin’s recent announcement illustrates how the partnerships benefit both sides. The company said its integration with Natural Cycles supports select watches, including the fēnix 8, Forerunner 570, Forerunner 970, Venu 4 and Venu X1, giving users a way to sync skin-temperature data into the app for fertility insights. Oura offers a similar connection for overnight temperature trends, and Apple Watch support extends the same idea to wrist-based sleep data.
For Natural Cycles, the commercial logic is clear. The NC° Band provides a low-cost, own-brand entry point for people without a wearable, while partnerships place the app inside broader health ecosystems already used for sleep, recovery and cycle tracking. Whoop has said women account for a growing share of new members, and the company is using the Natural Cycles integration to strengthen its women’s health offer without building a regulated contraceptive product itself. Natural Cycles, meanwhile, keeps adding routes into the same service, which is what makes the strategy unusually durable.
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