WHOOP and Natural Cycles Add FDA-Cleared Fertility App Access for Eligible Members

WHOOP has moved deeper into women's health by adding a Natural Cycles integration that gives eligible members access to a one-year subscription to the fertility and birth-control app, a partnership that pushes reproductive health data further into mainstream wearable technology.

The Boston human-performance company announced on 4 August that members using compatible WHOOP MG and WHOOP 5.0 devices can automatically share overnight skin temperature with Natural Cycles. The data can then be used by the Natural Cycles app to support fertility insights and hormone-free birth control. WHOOP said the offer applies to eligible members who are new Natural Cycles users, with a 12-month app subscription included as part of the WHOOP membership.

The update matters because the product sits at the intersection of consumer health, regulated digital contraception and the fast-growing market for personalized body data. Natural Cycles is not only a wellness app. The company describes its NC Birth Control app as the world's first FDA-cleared digital birth-control method, a Class II medical device that uses biomarker data such as temperature and heart rate to identify fertile and non-fertile days. It also offers modes for pregnancy planning, pregnancy, postpartum and perimenopause.

WHOOP framed the deal as part of a wider shift in its membership base. The company said women are one of its fastest-growing member segments, with membership among women growing 111 percent year over year. That growth gives the partnership commercial significance beyond a feature launch. Wearables have often been marketed through athletic performance, sleep tracking and recovery. By building around reproductive health, WHOOP is moving the product into a more personal and recurring decision area, where trust, privacy and clinical validation matter more than a simple activity score.

The founder angle is also direct. Natural Cycles was founded in 2013 by physicists Dr. Elina Berglund Scherwitzl and Dr. Raoul Scherwitzl. The company says it has more than six million registered users and support from 30 peer-reviewed studies, with regulatory authorizations beyond the United States in markets including Europe, Canada, Brazil, Australia, Singapore and South Korea. For SheMeansNews readers, that makes the partnership a useful example of a women-focused health company moving from niche app category into connected-device infrastructure.

The practical question is whether integrations like this make reproductive health tracking easier or simply place more sensitive health information inside commercial technology stacks. WHOOP and Natural Cycles say sensitive health information will be handled with high privacy and security standards. Users will still need to understand what data moves between services, what each product can and cannot tell them, and whether a digital contraceptive method is clinically suitable for their circumstances.

The business signal is clear: women's health is becoming a product-development priority for mainstream health technology companies, not a small tab inside a fitness app. The strongest companies in this space will need to combine clean user experience with medical accuracy, transparent data handling and careful communication. The WHOOP and Natural Cycles deal shows how the category is moving from education and awareness into actual bundled services that can affect everyday decisions.