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| Garmin smartwatches now integrate with the Natural Cycles app |
In a move that bridges the gap between high-performance wearables and intimate health management, Garmin has officially announced a groundbreaking new integration with Natural Cycles (NC°).
For millions of users who rely on their Garmin smartwatch to track fitness, sleep, and recovery, this update transforms the device into a powerful tool for reproductive health. The integration allows overnight skin temperature data captured by select Garmin watches to flow directly into the Natural Cycles app, automating a process that previously required a manual step for many users.
Natural Cycles is not just another period tracker; it is a Class II medical device cleared by the U.S. Food and Drug Administration (FDA) . It uses an algorithm to analyze basal body temperature and other metrics to determine daily fertility status—whether you are trying to conceive or looking for a hormone-free way to prevent pregnancy. Beyond family planning, the app is also widely used to help users understand perimenopause symptoms by tracking cycle patterns and temperature shifts over time.
How the New Feature Works
For years, users of wearable technology have had to manually enter their temperature data into fertility apps to get accurate predictions. With this new integration, that friction is removed.
If you own a compatible Garmin smartwatch, the device will automatically capture your skin temperature while you sleep overnight. This data is then synced seamlessly with the NC° app. Instead of remembering to take a temperature reading the moment you wake up—before moving or drinking water—the Garmin handles the work passively in the background.
"By integrating overnight skin temperature data from select Garmin smartwatches, we are providing users with a more seamless experience to track their fertility status, making it easier to plan for what’s ahead," said a representative in a recent press release.
You can read the official announcement and technical details regarding the algorithm on the Garmin Newsroom .
Which Garmin Watches Are Supported?
While this is an exciting update, the integration is currently limited to a specific selection of Garmin’s newest hardware. Not every Garmin watch with a temperature sensor is compatible yet. The models that currently support the Natural Cycles integration include:
- Fenix 8
- Forerunner 570
- Forerunner 970
- Venu 4
- Venu X1
The Venu X1, known for its vibrant AMOLED display and long battery life, is currently available as a top-tier option for those looking to upgrade. You can check current pricing and availability for the Venu X1 on Amazon .
Geographic Availability
It is important to note that the Garmin x Natural Cycles integration is region-locked due to varying medical device regulations and software rollouts. The feature is currently available only in the following countries and regions:
- Australia
- Brazil
- Canada
- The European Union
- Norway
- Singapore
- Switzerland
- The United Kingdom
- The United States
If you reside outside these areas, you may need to wait for future regulatory clearances before the automatic sync becomes available in your region.
A Closer Look at Natural Cycles
For those unfamiliar, Natural Cycles (NC°) has carved out a unique niche in the health tech world. By relying on an algorithm that learns your unique cycle, it offers a contraceptive option for those who prefer to avoid hormonal birth control. It works by identifying "red days" (fertile days where pregnancy is possible) and "green days" (non-fertile days).
The addition of Garmin’s continuous overnight temperature monitoring adds a layer of reliability to this method. Instead of relying on a one-off oral thermometer reading that can be affected by sleep disturbances or inconsistent wake-up times, the watch provides a consistent metric based on skin temperature trends over the course of the night.
Launch Promotion
To celebrate the launch of this partnership, both companies are offering incentives for new users looking to equip themselves with the full ecosystem.
Customers can currently take advantage of 10% off a Garmin smartwatch (including the models listed above) and 10% off the Natural Cycles Annual Plan. The NC° Annual Plan typically retails for $134.99 annually. This discount makes the subscription, which is required to use the app, slightly more accessible for those making the switch to automated temperature logging.
For more details on how the syncing works and to verify your device compatibility, visit the Natural Cycles Garmin Integration Page .
The Future of Wearable Health
This integration marks a significant moment in the wearable tech industry. It highlights a shift from devices that simply track "steps and sleep" to tools that offer legitimate medical-grade insights.
By partnering with an FDA-cleared app, Garmin is positioning its hardware as a serious contender in the women’s health space—a sector that has historically been underserved by the predominantly sports-focused wearable market. For users who are already invested in the Garmin ecosystem, this eliminates the need to wear a separate device (like an Oura Ring) solely for fertility tracking.
As the lines between fitness wearables and medical devices continue to blur, this integration sets a precedent. It demonstrates that with the right software partnerships, a smartwatch can be just as valuable for reproductive planning and understanding perimenopause as it is for running a marathon.
Whether you are trying to conceive, exploring non-hormonal birth control, or simply want to understand your body’s cyclical patterns better, the new Garmin and Natural Cycles integration offers a streamlined, data-backed solution.