femSense 24/7 Ovulation Tracker | The Easiest Way to Track & Confirm Ovulation
Predict and confirm your fertile day. femSense reads your temperature 24/7 to detect the specific pattern related to ovulation. Get real-time results and start your fertility journey with clarity.
- Just 1 patch per cycle worn during your fertile window
- Confirms ovulation with 99.73% accuracy
- Includes free femSense app
- FSA/HSA-Eligible
- 60-day satisfaction guarantee
femSense 24/7 Ovulation Tracker | The Easiest Way to Track & Confirm Ovulation
Track and Confirm Ovulation with Ease and Accuracy
femSense does the work for you.The femSense ovulation tracker temperature patch measures your body temperature during your fertile window; the algorithm interprets the temperature measurements, and the app gives you daily updates on your fertility status. When used correctly, femSense predicts and confirms ovulation with 99.73% accuracy.
Fertility Tracking in 3 Easy Steps
FAQ
Who can use femSense? (Is it right for me)
femSense is suitable for fertile women who bleed and ovulate. If your cycle is between 21 and 35 days and your cycles don't typically differ more than +/- 3 days, femSense is for you!
If your menstrual cycle is irregular, then femSense cannot predict your fertile window reliably. In this case, we recommend you consult a doctor before choosing femSense.
While we would love for femSense to be suitable for everyone, it is important to note that this may not be the case. Please review the following information to determine if femSense is the right for you.
If you have sensitive skin or allergies to medical-grade adhesives, the femSense sensor patch may not be suitable for you. However, you can still use the femSense app as a period and symptom tracker.
If you have irregular cycles or infrequent/absent menstruations, femSense relies on a regular cycle to accurately calculate the patch application day, so it may not be effective for you.
Weight conditions (underweight or overweight) can increase the risk of adhesion issues or skin irritations with the patch. If you have a BMI lower than 18.5 or higher than 30, femSense may not be right for you.
Keep in mind, excessive consumption of nicotine or alcohol can impact body temperature and potentially affect the accuracy of femSense in detecting ovulation.
femSense is not ready to support medical conditions such as PCOS. If you do not have a menstrual cycle between 21-35 days or take medications that affect body temperature, femSense may not be suitable for you.
If you are unsure whether femSense is suitable for you, please contact your doctor or get in touch with our technical support via e-mail to: customercare@femsenseus.com
How many patches do I use per cycle?
You can use one patch per cycle. After applying and activating a patch according to the in-app instructions, the patch is associated with your current cycle.
How many patches will I need?
You will need one patch per cycle that you plan to use femSense. If your goal is to get pregnant, data from a recent study on women using natural family planning like femSense can help you determine how many you might require:
- 42% conceived in their first month of trying
- 75% conceived by their third month
- 88% conceived by six months
- 98% conceived by 12 months
Recent user data suggests the average femSense user in "Get Pregnant" mode uses 2.35 patches before reporting pregnancy (per September 2023 user data). Everyone is different and femSense cannot make any guarantees about when an individual may become pregnant, but we hope this helps!
How does the femSense patch work?
The femSense System consists of a very precise temperature sensor embedded in an adhesive patch and the supporting app.
Th femSense app prompts you to apply the patch when it estimates your fertile window. The sensor patch is worn underneath your arm. Once activated, the patch measures the body temperature continuously, 24/7, for up to 7 days. To work correctly the patch should be read by your NFC capable smart device at least once (1) a day. The app will ask you to read the patch twice (2) a day for optimal evaluation. femSense tells you when you are fertile and, based on the recorded temperature data, femSense can detect and confirm ovulation. Every month the app reminds you when to apply the patch, when to read the patch, and when you are fertile.
How accurate is femSense?
The temperature sensor used in the femSense patches detects temperature differences smaller than 0.1°C and was especially designed to detect the postovulatory temperature rise, which is typically between 0.2°C-0.5°C.
In contrast to the basic basal temperature measurement method the patch records a temperature value several times per hour. As the patch is always in the same position, measurement artifacts can be minimized. A clinical study with the medical university in Graz proved the accuracy of the sensor patch and now an independent Swiss statistics institute has confirmed that femSense is 99.73% accurate when predicting ovulation.
How does femSense know when I am fertile?
femSense reliably detects your ovulation and most fertile days using continuous temperature measurement and the well-known temperature method.
The femSense app predicts your fertile window, the days you will most likely get pregnant. The prediction is based on your previous periods. The femSense sensor patch measures your body temperature continuously, 24/7 during your fertile window to measure and confirm your ovulation. You are fertile in the days shortly before and immediately after ovulation.
Is femSense HSA/FSA Eligible?
femSense is a FSA- and HSA-eligible product and, can be paid for on femSenseUS.com with your FSA or HSA card.
Let customers speak for us
Femsense really works! I was doubtful at first, sinse I have PCOS, but first time using it, it actually detected my ovulation, I also had a progesterone blood test that showed, that I ovulated. I unfortunately didn't get pregnant that cycle, but will 100% be buying it again, worth the money, it's better then peeing on sticks and trying to read them.
I got pregnant the first month with femsense. I was actually ovulating 2 days later in each month than I thought so we had stopped trying by then. With this it knew the ovulation day and we hit it perfectly! I’m amazed it worked so well.
After few days with patch I do become irritated slightly but nothing major. I used product for about 3 months and was able to conceive. Was able to see that my ovulation was slightly more delayed than thought which helped with our timing
I was able find and see when I actually ovulated. It took the guess work out!!
femSense Ovulation Tracker
femSense Ovulation Tracker
This made confirming ovulation so simple. Easy to apply and then you just go about your fertile week! I had never been able to "for sure" confirm I was ovulating trying to guess with hormone sticks or try to do basal temp with a thermometer making sure i was doing everything right...this made it SO EASY!!
And the JOY i felt when it told me it confirmed ovulation was IMMENSE!
After 14 months of trying to get pregnant and countless amounts of negative ovulation sticks I came across FemSense on TikTok. Decided to give it a try since I had tried everything else and to my surprise I ovulated sooner than anticipated after my period. To be exact, FemSense sensed I ovulated 9 days after my period. Few weeks after that got my positive pregnancy test ❤️
I got pregnant on the first use of this!! So happy that I tried this product!
Great enjoying it
The app and patch are easy to use. That’s what I need right now.
I wore both the patch and my temp drop band. Surprised how spot on it is. It let's you know that you ovulated where as my other let's you know it's close....super impressed ordering more patches!
I've been using Femsense for 2 months now with the goal of avoiding pregnancy and it has been a game changer! I love the ease and accuracy of it!
I have used this product for 2 months after having a baby 9 months ago. I’m not pregnant after the 2nd month of this patch!
I was hesitant about trying this product, but it found my ovulation day with the first patch! The change in BBT wasn't detected until the second reading that night, so I'm not sure how much longer I was in my fertile window. I would recommend this product to others because it is affordable and reliable! Between this and urine LH test, I was able to confirm this. I was using this product to get more familiar with my body, but when I am ready TTC I will use this product again!
Confirm ovulation, reach your fertility goals
15,000 women have used femSense to get pregnant faster in the past 6 months*.
