The Graph View in your Natural Cycles app is a visual map of your unique menstrual cycle. It plots your daily temperature readings to create a comprehensive view of your hormonal shifts, fertility windows, and overall reproductive health.
Understanding your graph helps you see exactly how the NC° algorithm calculates your daily fertility status, giving you full confidence in your journey.
You can access your graph from the Today view by clicking on the Graph icon in the top right corner or by scrolling down and clicking on Graph in the Algorithm box.
Key Features of Your Graph
How to Read the Graph
When you open the Graph tab in your app, you will see a fluctuating line made of data points. Here is what those variations and lines mean:
- The Horizontal Coverline: This is the baseline running straight across your chart. It acts as a clear separator between your lower pre-ovulation temperatures during the follicular phase and your higher post-ovulation temperatures during the luteal phase.
- The Solid Line: A solid line connecting your daily temperature dots represents confirmed, stable data that the algorithm is actively using to map your cycle trends.
- The Cycle Days: Your cycle days are displayed at the bottom of the graph, starting with Cycle Day 1 (CD1) on the first day of your period.
- Temperature Ranges: On the right side of the graph, you will see a scale of temperatures. These ranges are completely customized to your unique body, based on your average temperature in each cycle phase and how much it naturally varies.
Decoding the Icons and Colors on Your Chart
Your graph is packed with helpful visual shortcuts so you can review your history at a glance:
- Fertility Status: You can see your fertility status (Red/Green) for each day of your cycle.
- Period: The days you log period bleeding are highlighted by a clear purple window across the graph.
- Ovulation: Before ovulation, the app displays a prediction for your upcoming ovulation day, marked with a grey egg icon. Once the algorithm confirms ovulation has passed, your most likely ovulation day shifts to a solid purple egg icon.
- Sex: Above your temperature curve, any logged intimacy will appear as a heart icon. You can also see which type of sex was logged; unprotected (white full heart), protected (heart with lock icon), or other types of sex.
- Algorithm-related icons: The very top of the graph displays secondary tracking data that directly influences the algorithm, such as LH (ovulation) test results or reasons for an excluded temperature. If you log multiple entries on the same day (e.g., an ovulation test and an excluded temperature), a number icon like '2' will appear. You can click directly on any of these icons to view the exact details of what you logged.
Why is the graph important?
The graph helps you learn more about your unique cycle. It’s also the best way to understand your temperature curve and how it looks throughout your cycle. In the Today tab > See Cycle Insights, you can access more information about your temperatures in each cycle phase by clicking on the Follicular phase and Luteal phase sections.
The graph helps you visualize how your temperature is affected by the different hormones during your cycle. In the follicular phase, your temperatures will be lower. Once ovulation happens and you enter the luteal phase, your body releases the hormone progesterone, which causes your temperature to rise and stay elevated for the rest of the cycle. You can read more about how the algorithm detects ovulation in this article: How Natural Cycles detects ovulation.
If you log ovulation test results, you can also see when your LH peak has happened in relation to your ovulation day (but remember that ovulation tests are optional, and ovulation can only be confirmed by a clear temperature rise).
By looking at your graph frequently, you will also understand if and how your temperatures fluctuate during your cycles. You can read more about temperature fluctuations in this article: My temperature fluctuates - why, and what can I do about this?
Frequently Asked Questions
Why is my coverline missing on my graph?
When you first start with Natural Cycles, it takes a little time for the algorithm to get to know your unique rhythm, so you won’t see a coverline right away. Similarly, if you have recently switched to a new device, the algorithm will need to calibrate and establish a new baseline. In general, it can take anywhere from a few days to a full cycle before your coverline is displayed on the graph. Just keep logging your temperature data as usual, and your coverline will show up soon!
Can I look at my past cycles to compare them?
By clicking on the compare icon below the cycle graph, you can compare three cycles at a time.*
*If you are starting Natural Cycles after hormonal birth control, please note that your Cycle 0 (the first cycle after hormones) will not be shown in the Compare view.
How can I spot tracker trends?
By clicking on the Tracker Graph icon below the Cycle Graph, you can see an overview of the various trackers you have added during your cycles, and you can zoom out to compare your data for multiple cycles.
The Tracker graph can help you identify patterns in your cycle symptoms and better understand what to expect in the future.
Tip: You can also compare cycle trends by going to Cycle Insights > History > Toggle “Show Trackers”. Learn more about this in the article: What are the features of the Cycle Insights tab?