https://www.statnews.com/2018/09/13/sweden-regulator-no-issues-natural-cycles-app/
Sep 13, 2018 - The regulator concluded that the despite a spate of unintended pregnancies, the app’s “failure rate” matched the one in the company's marketing...
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https://www.theverge.com/news/863046/natural-cycles-wristband-digital-birth-control
Jan 15, 2026 - The FDA-cleared digital birth control app Natural Cycles is launching a new wristband designed to track your temperature, heart rate, and movement while you...
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https://www.theverge.com/2023/2/13/23598042/samsung-galaxy-watch-5-natural-cycles-period-tracking-wearables
Feb 13, 2023 - Samsung and fertility app Natural Cycles are teaming up to bring temperature-based period tracking to the Galaxy Watch 5 and Galaxy Watch 5 Pro. It’ll be...
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https://lifehacker.com/health/natural-cycles-now-has-a-smart-band-to-track-your-temperature-and-fertility
Jan 16, 2026 - Natural cycles, a birth control and fertility app, is now offering a Whoop-style band to take temperature measurements in place of a thermometer.
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