• Can my weight affect the comfort of the patch?

  The performance of the femSense patch can be affected if the patch is subjected to pressure or friction. femSense users with a high BMI occasionally report that their bra is too tight over the patch and that this can not only cause discomfort but also affect the functionality of the patch. For this reason, we recommend users with a high BMI wear a sports bra or other low impact, comfortable underwear while wearing the femSense patch.Some readers

• What is the shelf life of the patch?

  The patch has a shelf life of two years from the date of packaging. On the patch box you will find the LOT number and the expiration date (year-month-day). The expiration date shows you how long you can use the patch.Few readers

• I applied the patch too late, what can I do?

  If you applied the patch one day after the scheduled patch application day, it is not a problem. You have a maximum of two days to apply the past. You should be able to activate the patch without any problems. If you applied the patch 2 to 3 days after the scheduled patch application date, please contact our technical support via email (support@femsense.com), and they can manually adjust your application date so that you can activate the patch. For fertility tracking experts: USome readers

• How long do I have to apply the patch?

  Once you reach your patch sticking day, you will get a notification from the app. Additionally, your patch application day will be highlighted in the calendar with a light patch icon. Once you reach this day, you only have a total of two days to apply the patch. That is, the day the patch icon is displayed and the day after. After that, the app prevents you from activating the patch, otherwise, the measurement period before ovulation would be too short. In order to detect the postovulatory temSome readers

• What is NFC?

  NFC (Near Field Communication) is a globally used transmission method for exchanging data. Compared to Bluetooth, NFC is only possible over short distances (up to a maximum of 4 in). This guarantees that no third party can access your data which is stored in the patch.Few readers

• Can I do sports while wearing the patch?

  Of course, but as with any common bandaid, adhesiveness may be impacted depending on the amount and exposure to sweat/water/heat. Having said that, the tech inside the patch won't be impacted at all.Some readers

• How do I dispose of my patch?

  The sensor inside the femSense patch uses a battery as an energy source and should therefore be disposed of in a battery recycling box. You could also take advantage of our recycling concept. Return 6 used patches to us and we will reward you with a voucher code for a free patch with your next purchase.Few readers

• Will I still have an accurate estimate of my fertility without the femSense patch?

  Using the app without the patch will give you a pretty good idea of when you will be fertile. When you use the sensor patch femSense can measure and confirm ovulation and the algorithm has more exact information about your cycle, which it can include in its calculations. This means that the predictions are more exact and personalized. If you would prefer the app to be more personalized, accurate and to include confirmation of ovulation please visit our webshop (https://femsenseus.com/products/fFew readers

• Why couldn’t femSense detect my ovulation?

  There can be several reasons for this and it does not have to mean that you did not ovulate. femSense works most reliably when your cycles are regular. However, cycles can sometimes be shorter or longer. In some cycles the follicular phase (the first half of the cycle) is a little longer or shorter than usual, which means that ovulation also occurs a little later or earlier. This is completely natural, but it can still affect the accuracy of femSense. If the patch is applied too late or too eaSome readers

• I missed my patch application window and now I can't start the patch, what can I do?

  Your patch can only be activated within the calculated patch application window, which is before the start of your fertile days. If you missed these days and applied the patch later than instructed by the app, you can shift your patch application window by up to three days using the luteal phase adjustment. You can find out more about this in this article. If you are unsure about this, please contact our tSome readers

• My patch is uncomfortable, what can I do?

  Many people are sensitive to band-aids or adhesives. The femSense patch is made of hypoallergenic materials used in medical wound care, however, because the patch is worn in the same place for several days, slight skin irritations such as itching, burning, or redness may occasionally develop. This is due to the adhesive strength of the patch. These skin irritations may still be visible after the patch has been removed. We recommend using a soothing ointment and it should fade after 48 hours. IfFew readers

• My patch is starting to come off, what can I do?

  If the patch starts to lift at the corners, you can fix it temporarily with tape or a band-aid. If the patch comes off completely within the first few days, please contact our technical support via email: customercare@femsenseus.com.Few readers

• Can I stick my patch before the predicted patch application day?

  The femSense algorithms determine your fertile days and the correct patch application day based on previous cycle lengths. The sensor patch should be worn during your fertile days in order to measure and confirm ovulation. However, if you think that the patch application day has not been optimally predicted for your cycle please get in touch with our support: support@femsense.com. They will be happy to help you out and can adapt your current cycle calendar if necessary. For Fertility AwarenesFew readers

• Why don't I get notifications (reminders) from my femSense app?

  In order to receive personal notifications from femSense, they have to be activated under "Notifications" in the settings. If you don't find an entry from femSense in the notifications, then uninstall the femSense app (the uninstall function is visible by long tapping on the app icon) and download it again from the App Store/ Play Store. Don't worry, your existing user data will be preserved. Then log in with your existing user data and allow push notifications through femSense.Few readers

• 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. If you experience a problem while wearing a patch, please contact our technical support (per email or use the "Contact Support" feature in the femSense app menu) before taking further action.Few readers

• Can I pass through airport security checks when wearing the patch?

  Yes, however we recommend that you take the femSense packet with you to show to security staff if necessary.Some readers

• I have a problem with the app/ patch, what can I do?

  If you are having difficulty reading the patch with your phone, please read the following article: What can I do, if I cannot read the patch? If you have applied the patch too early, please read the following article: I applied the patch too early, what can I do? If you don't remember your last period, please read the following article: What can I do when IFew readers

• How do I find the NFC-antenna on my phone?

  On iPhones (iOS/Apple) the NFC-antenna is on the back of your phone at the top. If you want to read your patch, place the top edge of the back of your iPhone on the patch. On Android phones the position of the NFC-antenna depends on the manufacturer of the device. Most of the time, the NFC-antenna can be found near the camera or in the middle aFew readers

• How can I find out if my Smartphone has NFC?

  For Apple (iOS): For iPhone 7 and newer models the NFC function can be used by all apps. NFC is permanently activated. For Android: For Android phones it depends on the manufacturer and on the smartphone model. To see if your smartphone has NFC: Check your settings. Search in "Connections", "Device Connections" or "Further Connections" for NFCFew readers

• How can I communicate with the patch?

  Open the "Today" screen in your femSense app. Press "Read Patch" (If it is a new patch you will see a Tutorial) Place your phone with the NFC antenna directly on the patch. Hold in position for several seconds and do not move your phone until the activation or the readout of the temperature data has been confirmed via vibration Once you have successfully started the patch, the app will tell you that the patch has been activated. Please read your patch twice (2) a day to detect ovulatFew readers

• How do I correctly apply the patch?

  When the app tells you to apply the patch, please follow the steps below carefully. Correct application of the patch is vital, otherwise the adhesiveness and the comfort of the patch can be affected. Clean the area with soap, shower gel or an alcohol swab, which does not rehydrate your skin. Place your hand on your hip and use your other hand to find the correct position for the patch. Put three fingers beneath your armpit on the side you chose to apply your patch. Just below the thirdSome readers

• How often can I read my patch?

  The patch can be read at any time of the day, several times a day. However, to get daily updates on your ovulation, the patch should be read at least twice a day. We recommend reading the patch once in the morning, a few hours after getting up, and once in the evening. It is also useful to read the patch at approximately the same time of day, so that you get a certain routine with the patch.Some readers

• When can I apply the patch?

  Please apply the patch only when the app tells you to do so. The patch application day is determined based on your period date entries. If push notifications are enabled, you will be notified to apply your patch on your patch application day. In the calendar, the patch application days are marked with a different patch icons: Gray patch icon: missed patch application day (you have missed the patch application day and are in your second half of your cycle; please wait until your next cycFew readers

• Does the patch emit radiation?

  No. Unlike other products on the market which use Bluetooth for their data transfer, the femSense patch does not emit any radiation. femSense uses NFC for the data transfer, not only is this quicker (less than 2 seconds), it also means that the user is not exposed to radiation.Few readers

• How often can I use a patch?

  The patch is a single-use product and can only be used for one cycle. After taking down the patch, you can dispose of it in a used battery collection container or you can participate in our recycling campaign.Few readers

• Can I shower, take a bath or use a sauna while wearing the patch?

  Of course, you can shower while wearing the patch. The patch is designed in such a way that daily body care is possible. However, long baths and sauna sessions should be avoided, as the warm environment can reduce the adhesive strength of the patch (as with any other skin patch), which could cause it to peel off prematurely.Some readers

• How long do I wear the patch?

  The patch is only worn during your fertile window, the days leading up to and just after ovulation, usually 5 to 7 days.Some readers

• What can I do if I cannot read the patch?

  Firstly, please make sure that you are holding your phone correctly and that you know where your NFC antenna is located. You will find instructions here. If the problems persist, please contact our support via email. If you receive error messages from the app, please take a screenshot and attach it to the email. In the femSense app you can also contact our technical support via the "Contact Support" function in the menu or emFew readers

• Which phones are compatible with femSense?

  Basically, the smartphone must have NFC and an internet connection to be able to use the femSense app. For Apple: Apple devices from iPhone 7 or newer models can use NFC without restrictions. NFC is automatically enabled, so you don't need to turn anything on or off. Note: iPhone 6s does have NFC, but this is only available for Apple Pay. For Android (hFew readers

• I applied the patch too early, what can I do?

  If you applied the patch one day before the scheduled patch application day, it is not a problem. Just wait until tomorrow and read the patch afterward. If you applied the patch 2 to 3 days before the scheduled patch application date, please contact our technical support via email, and they can manually adjust your application date so that you can activate the patch. You can also use the "Contact support" option in the menu of the app. For fertility tracking experts: Using the lutFew readers