Digital health company Natural Cycles has launched Sleep Insights within its existing app of the same name. The new feature integrates sleep and cycle insights in one place and can be accessed from the company’s wearable device.

Sleep Insights will roll out to users tracking overnight with the NC° Band or Oura Ring, with broader availability, including for users connecting through Garmin and Apple Watch, planned following launch.

The goal is to help users better understand how hormonal changes throughout the menstrual cycle may influence sleep, recovery, and overall well-being, according to Natural Insights, which developed the first FDA-cleared birth control app. The company said its  broader vision is to create more personalized, cycle-aware health insights.

Although sleep tracking has become increasingly popular, most platforms do not account for how hormonal changes can influence women’s sleep across different phases of the cycle, the company said.

“We hear from many women that they notice changes in their sleep throughout their cycle, but most sleep platforms aren’t designed to explain those patterns through the lens of female physiology,” said Dr. Magda Armbruster, vice president of product at Natural Cycles. “Because Natural Cycles already helps users understand their hormonal patterns and fertility status, we’re uniquely positioned to connect sleep changes to the menstrual cycle and deliver insights that feel more personal, relevant, and actionable.”

While sleep and the menstrual cycle have traditionally not been discussed much, there are more and more studies suggesting that hormonal fluctuations throughout the cycle may influence sleep quality, sleep architecture, and perceived restfulness. 

Research has also shown that women’s subjective experience of sleep quality does not always align with objective sleep measurements, particularly during the premenstrual phase. By combining self-reported experiences with wearable data, Sleep Insights aims to bring a more personalized and cycle-aware understanding of sleep.

The new Sleep Insights feature includes:

• Morning Check-In: Each morning, users can reflect on how they slept by logging whether they slept poorly, okay, or well, had trouble falling asleep, felt restless, woke up refreshed, woke up tired, or experienced other sleep disturbances. This input helps provide context for the user’s nightly sleep data and contributes to the personalized insights shown within the app.
• Daily Insights: After completing the morning check-in, users can view key sleep metrics — including sleep duration, efficiency, and timing — alongside their daily fertility status, paired with personalized messages tied to their current cycle phase. Personalized insights combine wearable data, the user’s reported experience, and their current cycle phase to help explain nightly sleep patterns in context.
• Cycle-Aware Sleep Trends: Over time, users can explore how sleep patterns may shift across different phases of their cycle, helping uncover personal trends and build greater awareness of their body’s rhythms. For example, some users may notice more restless sleep during the premenstrual phase or stronger sleep quality during other phases of the cycle.

Historically, many women have had to track sleep, fertility, and cycle patterns across separate apps and platforms, the company maintaned. Sleep Insights is designed to bring these signals together in one place to help users better understand how their bodies change throughout the month.

The NC° Band was introduced earlier this year as the first wearable designed for Natural Cycles and collects both temperature and heart rate data. The launch of Sleep Insights expands its role beyond fertility tracking.