How femSense works.
Easy and also completely natural and hormone-free.
Lade dir die femSense ganz einfach im iOS App Store oder Google Play Store herunter. Registriere dich und starte sofort, mit dem Tracken deines Zyklus sowie deiner Symptome.
The app shows you when to apply your first patch and guides you step by step through the application.
Use your smartphone to read out your patch twice a day, preferably in the morning and evening, to achieve optimum results.
When you ovulate, your body temperature rises and your measured ovulation is displayed in the app.
Once your ovulation has been confirmed, you can remove your patch.
Voices from our community
Das musst du beachten, wenn du deinen Patch trägst
Das kannst du mit den Patch
Das solltest du nicht mit dem Patch
The patch is a disposable product
Do not wear it for longer than 7 days. If it is reused, the adhesive strength of the patch is no longer guaranteed and skin irritation may occur.
Do not use the patch if you are ill
Elevated temperature and fever can affect your body temperature and therefore the measurement.
In case of itching...
If you experience itching or other discomfort after applying the patch, please remove it.
You have a pacemaker
If you wear a pacemaker, only attach your patch to the side of your body away from your heart, otherwise the smartphone could interact with your pacemaker
Variety is key
Change the side on which you wear the patch with each cycle (unless you have a pacemaker).
Please do not dispose of the patch in normal household waste. You can find more information on this under Recycling in the menu "Product"
To be able to use all functions, you need the operating system iOS13 iPhone 7 or higher on iPhones and OS 6.0 Marshmallow or higher with NFC function on Android smartphones.
So sorry. With these medical indicators, femSense cannot reliably determine your ovulation:
Serious, acute or chronic illnesses
- Nicotine or alcohol abuse
- Ovarian syndrome (PCOS)
- BMI > 30
- Extreme weight fluctuations
- Allergies to components of skin plasters or adhesives
- Medication with an influence on body temperature
- Hormone treatments (e.g. contraceptive pill, hormone injection, hormone coil etc.)
More information on our medical contraindications in our Instructions for use.
Mon-Thu: 08:00 - 15:00
Fri: 08:00 - 12:00 CET
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