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Fertility monitoring based on a simple saliva test

An innovative saliva test designed to allow you maximum flexibility. Take the test at any time within your four-hour testing window in the morning. The only requirement: no foreign substances in your mouth for 30 minutes before testing. The inne test is not affected by the hours of sleep you got, or whether you consumed alcohol the night before, because it does not measure your heart rate or your temperature; it measures your hormones.

Get insights based on your daily hormonal trend

Get insights based on your daily hormonal trend

Measure your progesterone levels daily and understand your own unique hormonal trends. No more confusion on faint lines of ovulation tests. Understand your own ovulation based on your hormones and get personalised insights on the different parts of your own unique menstrual cycle. Because no body is the same.

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Your fertility at the tap of your finger

Know when ovulation occurs, follow your hormonal pattern along your menstrual cycle and learn more about the meaning of the different cycle stages. Day by day.

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Designed for an active lifestyle

You can hug, shower or get your kids out of the house and still get reliable measurements. Hormones in saliva are not affected by your environment, party nights or the flu the same way your basal temperature is.

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Your fluids made simple

The inne app teaches you how to read your cervical fluids. Learn to interpret this important sign of your fertility and women's health. Know what they reveal about your body today and discover your personal cervical fluid pattern over time.

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Magically connected

The inne reader sends your progesterone results to your inne App by connecting seamlessly to your iPhone, via Bluetooth or via Wi-Fi, adjusting to your everyday life, wherever you are.

Using the inne minilab

What's included in the first shipment?

inne reader

inne reader


inne strips for 1 cycle

System Manual, Quick Guide & USB-C Charger

System Manual, Quick Guide & USB-C Cable

inne is not certified for contraceptive use.

FAQ - Answers to your questions

There is plenty to ask about when entering this journey. We have collected a few of the most relevant questions and tried to address them in the clearest way possible. If you still need more information, visit our help center or connect with us via chat. We will be happy to share all we know.

Which benefits does inne offer compared to other fertility monitoring methods?

inne is a one-of-a-kind resource to gain insights into your individual hormonal patterns and access radical self-knowledge.

Based on a simple and convenient saliva test, inne captures the subtle changes in your day-to-day progesterone levels to detect and predict your fertile window and ovulation.

While other fertility monitoring methods only take a hormonal 'snapshot' around ovulation, inne is tracing your progesterone patterns throughout the cycle, drawing your unique hormonal portrait over time.

Developed to blend seamlessly into your everyday life, inne is the first of its kind to employ a convenient saliva test while offering maximum flexibility, as your progesterone measurements are not affected by lifestyle factors such as physical activity, lack of sleep, alcohol, sickness etc.

Which hormone does inne measure?

The inne minilab detects progesterone trends in saliva throughout the menstrual cycle. Progesterone influences many aspects of the body in a cyclic pattern. Along with preparing the body for a potential pregnancy, progesterone also influences your cervical fluid pattern and informs your body when to menstruate.

Did you know?

Progesterone levels rise around the time of ovulation and peak on the days after, before going down again and triggering your new menstrual cycle.

Can I use inne for contraception?

inne is currently not certified for contraceptive use. As soon as inne's Pearl Index is available, you'll learn about it on our website and socials.

The inne minilab is an in-vitro diagnostics medical device for fertility monitoring. Its intended use is detecting changes in salivary progesterone across a woman's menstrual cycle.

By monitoring those changes, the inne minilab can identify a woman's fertile window by predicting and confirming ovulation as well as distinguishing between the luteal and follicular phases of the cycle.

Can I use inne with endometriosis or PCOS?

Empowering every woman with a better understanding of their cycle and body is at the core of our mission here at inne.

If you have been diagnosed with or suspect to have PCOS and/or endometriosis, you can use the inne minilab for fertility monitoring as long as

  • your average cycle length is between 22 and 35 days
  • you are not on a hormonal treatment that affects your cycle.

While more extensive research on using the minilab with endometriosis and PCOS is planned for the near future, inne can already help you gain valuable insights into your progesterone levels and fertility.

Please remember that every cycle is different, and that the hormonal changes in the context of PCOS and endometriosis are highly individual. If you have further questions or are unsure if inne is the right choice for you, please don’t hesitate to contact us at

Which inne Strip plan is the best choice for me?
You can choose from different subscription plans to meet your individual needs and goals with inne.
  • Monthly plan: Full flexibility, cancel anytime.

  • 3-month plan: If your aim is to get pregnant, this one is for you.

  • 12-month plan: The best choice if you wish to track your individual cycle patterns over time.

When ordering your inne minilab, you’ll receive your inne reader and inne strips for one cycle. From there, all plans are billed and shipped monthly.


Can I use inne?

inne is currently a good fit for women who for the last three months can relate to these criteria

I am not pregnant

During pregnancy, you do not have a menstrual cycle. Therefore you should wait until the second consecutive period after the end of the pregnancy, even if the pregnancy was not carried to term before starting to use inne.

I am not breastfeeding

When breastfeeding, your hormone levels might fluctuate and your menstrual cycle is not regular. Therefore you should wait until the second consecutive period after you stopped breastfeeding before starting to use inne.

I am not on hormonal contraception

Hormonal contraception affects your natural hormone levels. You should have had two consecutive cycles after you stopped using hormonal contraception before you start using inne.

I am not on a treatment that affects my cycle

Medical treatments that can affect your cycle, should indicate so in the patient information leaflet of the respective medication. The inne minilab measures how your progesterone behaves during the menstrual cycle. If our menstrual cycle is affected due to another treatment we won’t be able to provide you with accurate evaluations.

I am not experiencing menopausal symptoms

Menopausal symptoms can be hot flashes and night sweats. During menopause, your hormone production decreases and can fluctuate. We hope we will be able to support women during menopause in the future.

My cycle is between 22 and 35 days long

For now, we can ensure the accuracy of the results for cycles between 22 to 35 days long. We are always working on making our system available for a wider variety of cycles.

I am older than 18 years old

The inne minilab is a medically certified system for fertility monitoring. It is intended for women above 18 years old.

CE marked for fertility monitoring
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