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trackle sensor system

trackle sensor system

Regular price 239,90€
Regular price Sale price 239,90€
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  • Free shipping within Germany

  • Certified contraceptive
  • 100% natural & hormone-free
  • 30 month guarantee
Lieferzeit: 3-5 Werktage
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With trackle you can determine precisely and reliably which days in your cycle you are fertile - and which days you are not. With the trackle you can have hormone-free contraception by using a hormone-free contraceptive, such as a condom , on your fertile days. Or you can use trackle as a supporter on your path to having children or as a helper in your cycle observation and control. By continuously measuring your core body temperature while you sleep, trackle is particularly precise and reduces sources of error in the classic temperature method - taking selective measurements at the same time in the morning is no longer necessary.

Delivery content

  • 1 x trackle sensor system
  • Free use of the trackle app - no hidden costs
  • Free onboarding course

Returns & Guarantee

  • 14-day return policy
  • 2.5 year guarantee on the sensor function
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That’s what makes trackle special

  • Developed by a woman

  • Certified contraceptive

  • Made in Germany

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What is trackle?

trackle is a sensor system for determining your fertility . It measures your core body temperature overnight and delivers the data obtained easily and reliably to the free app on your iPhone or Android smartphone as soon as trackle is placed in its box.

Who is trackle suitable for?

trackle works for all people with a cycle who either use safe and hormone-free contraception or who want to realize their desire to have children . And thanks to the continuous measurement and digital data processing, it is also ideal for anyone who has difficulty taking daily measurements in the morning: women with irregular sleep and life rhythms, small children and women who work shifts.

How does trackleRegular work?

The sensor is 6.6cm x 2.3cm in size. It is worn vaginally at night like a tampon and records the core body temperature. After getting up, remove the trackle and put it back in its box after cleaning. There he transfers his data. In addition, you provide further observations and the quality of your cervical mucus in the app a. The app tells you the result: Today is a fertile or infertile day.

What are the running time and costs of trackle?

trackle works for at least 30 months and, as a hormone-free alternative, is even cheaper than traditional family planning methods for women.

The daily routine with trackle

Medical device

The trackle sensor system is a medical product and meets the requirements of the Medical Devices Directive 93/42/EEC and the Medical Devices Act (Medical Devices Act - MPG). It meets the criteria according to Article 120 MDR.

When using trackle, please note our instructions for use included with your sensor!


1. What is the difference between trackleCatch and trackleRegular?

The difference between our trackleCatch and trackleRegular is that in our trackleCatch has a small hole in the recessed grip to which a return strap can be attached so that the sensor can be easily removed like a tampon. Many new customers therefore choose the trackleCatch.

The trackleRegular does not have this hole and can be gripped and removed using two fingers on the recessed grip. With a little practice this isn't a problem. The trackleCatch can of course also be used without a retrieval strap .

2. I have just stopped taking the pill / IUD / hormonal patch. When can I use trackle?

After stopping hormonal contraceptives, your body needs time to “adjust” again and this takes different amounts of time depending on the woman. You can use trackle immediately after discontinuing it. If you have bleeding after stopping (= withdrawal bleeding), you can enter this bleeding as your first menstruation in the trackle app to start your first trackle cycle.

trackle will then assume fertility until ovulation can be detected according to the rules of the symptothermal method (consisting of a high temperature and cervical mucus peak ).

We therefore recommend that you wear your sensor from the 5th day after your period starts and monitor and record your cervical mucus every day.

If you have any questions about stopping the pill or need support, please take a look at our stopping the pill guide .

3. When does trackle's evaluation become reliable? How long does it take to get used to it? Does trackle have to level off?

trackle is reliable from the first cycle because it does not evaluate the cycle based on past data or forecasts, but rather based on your current data, i.e. your core body temperature and your cervical mucus information. These always show whether you have ovulated or not. trackle therefore does not need any time to "settle in".

trackle evaluates your cycle using the symptothermal method. Of course, there must be enough data from the respective cycle for an evaluation. Here you can find out more about how trackle evaluates.

4. Can I also wear trackle during my period?

Theoretically, you can wear the sensor during your period, but you don't have to. The first day of your period marks the first day of your cycle.

We recommend using the trackle from the 5th day of your cycle in order to achieve enough measurements for an evaluation - this way you can also comfortably wear a cup or tampon during your period! If you want to wear the trackle during your menstruation, you can only do so in combination with a pad or period underwear.

5. When and how does trackle evaluate ovulation?

trackle evaluates using the symptothermal method (STM). Each day is initially viewed as potentially fertile - unless a day can be declared as infertile according to the STM rules.

As you may already know, two of your body signs change reliably and scientifically - namely the cervical mucus and the core body temperature:
The hormone estrogen causes the consistency of your cervical mucus to change visibly as ovulation approaches.

After ovulation, the hormone progesterone is released, which ensures that the body's core temperature rises by at least 0.2 °C. These two independent body signs make it possible to determine when the fertile phase is over - namely when ovulation has occurred. The STM makes use of these scientific findings. Ovulation has occurred when the following two conditions are met:
1. A cervical mucus peak has occurred

2. An increase in temperature has occurred

To evaluate your cycle and release the infertile phase, trackle requires your core body temperature data, which the trackle sensor measures overnight, as well as your cervical mucus information, which you enter in the trackle app. If one of the two pieces of information is missing, trackle cannot (yet) reveal ovulation and therefore no subsequent infertile phase.

If you have any questions about cervical mucus evaluation or need support, please take a look at our cervical mucus course .

6. Does the trackle evaluation also take into account the survival of sperm over several days?

You can only get pregnant for up to 7 days in a cycle: These 7 days include both ovulation itself, during which the egg can be fertilized for approx. 12-18 hours, and the days before, because sperm can contain up to Survive in the body for 5 days.

trackle reliably recognizes these days (as well as the infertile days) according to the rules of the symptothermal method and marks them in your app. The STM has been researched in several studies and is very reliable - it has a Pearl Index of 0.4 in method reliability (when used “perfectly”). With the symptothermal method, the core body temperature and cervical mucus are evaluated. This provides “double control” so that fertile and infertile days can be distinguished very precisely.

Please take a look here if you would like to learn more about the rules of the symptothermal method.

Customer Reviews

Based on 40 reviews
Katharina S.
Super Kundenservice und seit 2 Jahren Happy mit trackle!

Egal ob im Kundenservice, den vielen informativen Beiträgen auf Instagram oder der Handhabung - ich bin und bleibe eine begeisterte Trackle Nutzerin! Habe nun meinen Zweiten bestellt und bin froh eine solche Verhütungsmethode (damals durch meine Gyn) empfohlen bekommen zu haben. Macht weiter so, von mir würde es auch mehr wie 5 Sterne geben! :)

Marni Z.
Verlässlicher Begleiter

Benutze Trackle mittlerweile seit dem 5 Jahr. Die Benutzung ist einfach. Bisher hatte ich nie Probleme meinen fruchtbaren Tage zu bestimmen, so dass ich damit sicher verhüte oder auch direkt schwanger geworden bin. Ausnahmslos zu empfehlen, wenn man etwas Zeit und Engagement mitbringt.

Einfache Anwendung!

Ich bin froh auf trackle gestoßen zu sein. Nachdem ich jahrelang die Pille genommen habe wollte ich nach einer hormonfreien Alternative schauen. Die Anwendung ist sehr einfach und überhaupt nicht umständlich oder kompliziert (bin nämlich etwas faul), deswegen bin ich froh, dass trackle mir die Regeln/ das ausrechnen und das messen direkt nach dem Aufstehen abnimmt. Die App ist zudem schön gestaltet. Danke für diese tolle Erfindung!!

Annalena B.

Alles super das einzige ist dass er Daten vom Vortag nicht speichert wenn man vergisst den trackle zu synchronisieren

Hallo liebe Annalena,
vielen Dank für Deine Bewertung! Wir freuen uns, dass Dir trackle gefällt. Wusstest Du, dass der Sensor Deine Temperaturwert bis zu 7 Nächte speichern kann. Sende uns gern jederzeit eine Mail an, wenn wir Dich unterstzützen dürfen. Liebe Grüße Dein trackle-Team.

Katharina W.
Körpergefūhl und Verhūtung

Ich bin sehr dankbar für diese selbstbestimmte Art der Verhütung und fühle mich mit Trackle sehr wohl.