However, through research, the company has found that it has also been shown to be equally helpful for women who want to control their body’s monthly cycles for a variety of health reasons. Log 200+ symptoms from ovulation to lifestyle in your period calendar to learn more about your health. There are a few things to know, however, about buying a thermometer to detect your basal body temperature, a.k.a. your lowest, at-rest temperature. For one, you don’t technically need one labeled as a “basal body thermometer,” specifically, but you do need one accurate enough to detect the subtle shifts in temperature that point to changes in your fertility. "You need one that can measure at least one-tenth of a degree," says Maya Bledsoe, MD, of Austin Regional Clinic. Conception Guide & Pregnancy Prediction: Daily fertility advice. Get pregnant easily and spot pregnancy early.

When you ovulate, your basal body temperature will go up by 0.5 degree Fahrenheit,” says Dr. Adams, “and will stay elevated during your cycle after ovulation.” Like a traditional thermometer, users leave the thermometer in their mouth under their tongue for a minute while taking its temperature.

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They both agreed that accuracy was key: you can use any thermometer as a basal body thermometer, but it has to be able to capture a temperature reading at least to a tenth of a degree, if not to a hundredth. Otherwise, you won’t be able to detect the small differences in fertility-related temp changes throughout your cycle. If it sounds easy, that's because it is—but there's a catch. The only thing to keep in mind, says Dr. Bledsoe, is that topical thermometers are not typically as accurate as oral ones, since your skin is more responsive to environmental temperatures (e.g., if it’s warm in your room, your skin will be warm, too). However, we do like that Tempdrop is placed with the temperature sensor in your armpit for an axillary temperature, and not just on some random spot on your body. The Femometer app clearly displays users’ personal data with color-coded graphics that indicate where they are in their cycle.

You may want] to use an app if you are not able to plot your temperatures on a graph or want to see trends,” says OB-GYN Rachel Adams, MD, of Metropolitan OB-GYN in Baltimore, Maryland. Users do not need to take their temperature at exactly the same time every day; The Femometer will continue to make accurate predictions by detecting the current average temperature based on previous readings. It is also easy to use. All you have to do is place the end of the test under your tongue first thing in the morning and leave it there for about a minute. It will automatically sync with the app on your phone, record all the data in the app and analyze it there. After you’ve taken a few readings, the app will start making predictions based on your unique biology. Hygiene is extra important if you do opt for an internal thermometer – these are flexible and much more comfortable than they once were, but be sure to clean yours with an alcohol wipe after use. What are the different types of thermometer?To help come up with this list, we consulted with two OB-GYNs to discuss what to look for when selecting the right basal body thermometer. The experts we spoke to included:

Using a smart algorithm, the app predicts an ovulation date and tells you the probability of getting pregnant on a given day. A device like this is for more than just helping women who use it get pregnant, it’s about taking control of your body. BBTs read your lowest body temperature after a period of rest. You take it every morning before you get out of bed, record the reading (either by app or on paper), and then use the data collected over time to calculate the length of your menstrual cycle and estimate your ovulation timing, or fertility window. With an accuracy of 0.05 degrees, thanks to the use of industry-standard Omron temperature sensors, the Femometer is one of the most accurate BBT thermometers in the world. That makes it much better to predict various parts of your monthly cycle. That’s why it’s the world’s most accurate smart fertility thermometer.If the user forgets to take their temperature one day, the machine learning algorithm can predict their temperature based on previous readings. There are women who are genuinely curious about what is happening to their body, whether they are trying to conceive or not. Turn on your phone Bluetooth, Femometer app, and remove the cap of the thermometer to sync the data to the app.