Take your temperature every morning with our basal thermometer
Overview
Natural Cycles uses your basal body temperature (BBT) to track and predict the phases of your unique cycle. Our specifically designed thermometer provides a highly accurate temperature and stores the data in case you forget to add it to your app.
How it works
As soon as you wake up, use the thermometer to measure your temperature. Try to take your temperature at the same time every day for more consistent results. Add your reading to the app. The Natural Cycles algorithm uses your temperature data to track your fertility. You’ll see a Red Day (fertile) or Green Day (not fertile) displayed in the app. Accidentally miss a day? Don’t worry. Natural Cycles is just as effective if you forget to measure. Aim to measure at least five days a week to get the most from the app.
More details
Individual basal thermometer Interchangeable between Fahrenheit and Celsius Measures to two decimal places Illustrated instruction booklet included
This item is not available in your region.
Recommended for You
“To me Natural Cycles is not just hormone-free birth control, it is also one of the greatest tools l've come across to help me learn about my body.”
Lexi, Cycler since 2021
“It didn't take long to build the habit and love for the Natural Cycles process. Getting to add temperature and cycle symptoms felt like a step toward the reward of unlocking more insights about my body.”
Sav, Cycler since 2021
“I can't wait to continue my journey with Natural Cycles as birth control and possibly in the far future to plan pregnancy. That's one of the many great things about it, it can support someone in all stages of their life.”