OvaGraph is in the process of being retired as of December 1, 2025 due to resource constraints. To allow those who missed the initial cutoff to download their data, we are temporarily re-opening the OvaGraph website on the morning of Friday December 5th and will be shutting down OvaGraph permanently on the morning of Tuesday December 9th.

Please use this second, final window to download your cycles to your computer, and do not upload any additional data.

Additionally, we have launched a new Fertility Awareness Method charting app called Cyclisity that is available now on iPhones, in the US and Canada, for Fahrenheit. We are working to launch Cyclisity on Android, outside the US and Canada, and in Celsius in the coming months.

For instructions on how to download your OvaGraph data to your computer and also upload it to Cyclisity if you so choose, please email support@cyclisity.com and we will provide instructions.

Thank you for your patience and understanding during this transition.

Sincerely, Sabrina, Max, Toni and the entire Cyclisity team

What does the green shading on my graph indicate?

On OvaGraph, you have the option to choose your 'Basal Prediction Mode' (under Chart Settings) per the Fertility Awareness Method (FAM) rules or Basal Body Temperature (BBT). The Fertility Awareness Method predicts the fertile days in your menstrual cycle, by observing and charting two primary fertility signs: BBT and Cervical Fluid. In keeping with Toni’s Weschler’s recommendations in Taking Charge of Your Fertility, we also consider vaginal sensation to be a fundamental fertility sign.

If your Basal Mode is set to Fertility Awareness Method (FAM): Each day that you see fertile quality cervical mucus/fluid and experience lubricative vaginal sensation, you will see light green shading on that cycle day. Seeing those fertile signs can indicate that you are approaching ovulation, so we recommend you are considering yourself fertile.
If your Basal Mode is set to BBT: Once OvaGraph detects a possible thermal shift, it will display a purple vertical line on the cycle day where the shift occurred. It will also display green shading on the days just before the possible shift. The green shading indicates your most fertile days based on the BBT algorithm (light green = high fertility, darker green = peak fertility). Although this information is retroactive, it can help you to know if you timed intercourse during your fertile window, and can be used to help you predict your fertile window in your next cycle

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BBT Charting

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