Frequently Asked Questions

Red = fertile / possibly fertile
(On red days you can plan for a pregnancy.)

Green = non fertile days
(You are not fertile on green days.)

Yellow = learning phase/cycle fluctuation
(Yellow days should be considered as red days.)

Bright blue = possible pregnancy

Dark blue = probable pregnancy

That depends on whether the medication influences your body temperature or your cycle. In general, you should skip measurements while you are taking such medication. If you have doubts, contact your doctor or our customer service team.

In general, you should skip measurements during illness and while you are taking medication that can have an influence on your body temperature or cycle. If you have doubts, contact your doctor or our customer service team.

Remove the battery and store the device in a dry location.

The first 2-4 cycles of use are considered as learning phase. Over the course of the learning phase, Lady-Comp/Pearly will come to understand your cycle and begin narrowing down your fertile window. The devices remain quite cautious and conservative during this time, which is why Lady-Comp/Pearly is accurate starting the very first day.

First things first: If you feel that there is something not right, you feel sick, or you have pain, never hesitate to consult your doctor! Most people tolerate vaccinations without any problems. Sometimes, however, vaccination reactions occur: These are almost always harmless after-effects of vaccinations, which in the vast majority of cases pass very quickly. Some vaccinated people react with a slight fever (below 39°C / 102°F), aching limbs or faintness. The fever can occur only a few hours after vaccination and last up to 3 days. Such vaccination reactions are usually completely harmless and no cause for concern. As a rule of thumb: If you wake up in the morning after the vaccination and feel different than usual, for example sick or overtired, then interrupt the measurements until you feel better again.

When staying in other time zones, set your cycle computer to the local time immediately after arrival and activate the alarm. If the time lag is more than 6 hours, we recommend skipping the measurement on the same day and the following day. Instead, you continue to measure as usual on the day after.

Ideally, you measure daily. The fewer measurements you miss, the better.

No, Lady-Comp/Pearly is your individual fertility tracker with your individual data.

Lady-Comp/Pearly is programmed with a complex algorithm which evaluates your cycle by tracking your morning temperature (taken under the tongue) and knowing when you have your period. Lady-Comp/Pearly will then show you right away the measured temperature value and if you are currently fertile or not.

Yes, your initial Lady-Comp/Pearly order includes everything you need.

Before you start using a cycle computer, you must stop taking the pill. It influences your body’s hormone production. As soon as you have stopped taking the pill, you may start measuring your temperature with your cycle computer. Please be aware that the first bleeding after coming off hormonal birth control is a withdrawal bleeding and must not be entered as your period. If you are menstruating when starting with your fertility tracker and you cannot enter all days, do not enter the current menstruation, but the next one. The first day of menstruation is important because it marks the beginning of your cycle.

Only very few (hormone-free) medications have a direct influence on your measurements, but often the reason why you are taking medication can influence your temperature (e.g. fever or stress). Hormonal medication will influence your temperature and should under no circumstances be taken in combination with Daysy. If you're unsure, consult with your doctor or contact our customer service.

Based on their recorded data, our fertility tracker can compensate for the occasional missed reading. We still recommend you measure as regularly as possible so that your fertile phase can be narrowed down as precisely as possible. If you have to skip measurements due to illness, Lady-Comp/Pearly will get back on track once you start again.

You can rely on Lady-Comp´s/Pearly´s results starting the very first day of use. In the beginning, you will see more yellow and red days because Lady-Comp/Pearly is still learning your unique cycle. You will see more green days as the device comes to understand your cycle and can narrow down your fertile window. The more regularly you measure, the better.

Smoking should not influence the result. Alcohol, if consumed excessively or when your body is not used to it, does influence basal body temperature. If you can feel that you were drinking yesterday, you should skip your reading in the morning. If you feel just fine and have no headache or other symptoms of alcohol consumption, you are fine to temp as usual.

The non-hormonal IUD prevents the implantation of a fertilized egg in the mucous membrane of the uterus. Because the IUD is a foreign object inside the body, it causes the production of white blood cells - similar to inflammation. These small centres of inflammation in the uterus, which are normally not detected at all, can change the waking temperature. In order to obtain precise measurement results, it is therefore advisable to remove the spiral - and only then use a cycle computer.

Lady-Comp/Pearly expects a certain amount of normal irregularity. For optimal use of Lady-Comp/Pearly, cycle lengths of 19-40 days are the ideal requirement.

It is normal for cycles to fluctuate. If you're unsure, feel free to contact our customer service.

If your efforts to become pregnant have not been successful within six to twelve months, consult your physician.

Certain "strict" diets can lead to cycle irregularities, often times causing your period to come later. If you're unsure, reach out to our support team.

Yes. Irregular cycles are generally not a problem for Lady-Comp/Pearly. Even with irregular cycles, the device distinguishes between non fertile and possibly fertile days with a very high accuracy. However, in case of extreme fluctuations, using the device is not very beneficial, because you would get proportionally more “yellow days” displayed. Fluctuations of several days are usually not a problem. If you have questions about your unique cycle, please reach out to our team of experts.

The typical influences on your temperature and cycle include:

● excessive amounts of alcohol
● sleep deprivation
● disease or illness
● chronic physical or emotional stress
● significant exercise
● strict dietary restrictions / starvation
● malnutrition
● travel

Once you know the cause, many irregularities in your cycle are easy to reverse. Feel free to reach out to our customer service to discuss your temperature curve.

No, over-the-counter pain medication will not influence the measurements. The common additional antifebrile effect does not influence the basal temperature. However, please do not temp if you're using these medications to control a fever. If you're unsure, please contact our customer service.

If Lady-Comp has not received a measurement or menstrual input for a longer period of time (> 4 days) and a new cycle start is expected during this period, this message reminds you to make up for any entries you may have forgotten. If you had your menstruation during this period, add it before the
next measurement.

No. Lady-Comp/Pearly records all your data and keeps it safe.

Use a damp cloth to carefully clean the sensor of your device. You can also use a little alcohol or soap if you wish. Since Lady-Comp/Pearly is not waterproof, make sure that only the sensor and not the whole appliance comes into contact with water.

We recommend the following steps for cleaning:

1. Clean the sensor and tip with lukewarm water and/or mild soap before and after each use.
2. Dry with a clean cloth.

These steps will reduce the number of germs or possible viruses on the surface of the device. This cleaning is sufficient for daily personal use.

If the device needs to be disinfected as well, the following steps can be practiced:

1. Wash your hands thoroughly or wear disposable gloves.
2. Clean the sensor and tip (as per steps 1 & 2 listed above).
3. Moisten the sensor and tip with a disinfectant (limited virucidal), alcohol (60-80%) or isopropanol 70%.
4. Allow to air-dry (the sensor should not touch any other objects or surfaces).

Information COVID-19:

We are taking precautions as necessary, with staff wearing gloves, use of Personal Protective Equipment and increased cleaning methods. All products are disinfected prior to shipping.

Coronaviruses are encased viruses, meaning they are encased in a lipid envelope. All disinfectants with a virucidal (antiviral) or limited virucidal spectrum of efficacy are effective against coronaviruses. A list of all tested and approved disinfectants to fight Covid-19 is available from United States Environmental Protection Agency found here: [www.epa.gov](https://www.epa.gov/pesticide-registration/list-n-disinfectants-use-against-sars-cov-2)

The agents listed can inactivate the corona virus, which means it loses its ability to be infectious. This can be done in different ways:

· Denaturation -> destruction of the virus surface
· Removal of lipids from the virus envelope -> e.g. alcohol
· Impairment to the nucleic acid of the viral genome

Alcohol is capable of destroying the virus shell and can often be found already in your home. Alcohol that is 60% alcohol is effective in inactivating the virus. However, 100% alcohol is not effective because only alcohol with a proportion of water allows the lipids to be dissolved from the virus envelope. An alcohol volume between 60% and 80% is therefore recommended. Isopropanol (70% )is also a suitable agent for the inactivation of COVID-19. You can learn more about cleaning and disinfection for households from the Centers for Disease Control and Prevention here: [www.cdc.gov](https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/cleaning-disinfection.html)

If no replacement parts are shown in your shop, please contact your local distributor.

Please contact your local customer service.

Not really. On average, a woman's temperature increases by 0.3 degrees Celsius. If yours rises by more than 0.5 degrees Celsius on average, please contact our customer service.

If for some reason, the increase in temperature is very low, Lady-Comp/Pearly will switch to displaying red days for a longer period, before switching to yellow days and, eventually, back to green days. A low rise in temperature can be an indication of a hormonal condition. During anovulatory cycles, no rise in temperature is registered because ovulation did not occur. Corpus luteum insufficiency (CLI) is another possible reason for a low or indeterminable rise in temperature because the body doesn't produce sufficient progesterone to make the basal body temperature (BBT) rise. Menopausal women can also register lower increases in temperature, because their estradiol and progesterone values are declining.

No, since you measure below the tongue, these factors have no influence on the measurement.

Lady-Comp: Go to the settings and open the menu "Device Information".
Pearly: The device cannot display the battery charge level.

As soon as you see a battery icon on the start screen, you should change the battery/batteries soon.

The battery life of the battery/batteries we supply with your order is at least 6 months.

If the device did not take your temperature, try to repeat the measurement. Make sure to hold the device still and your mouth closed while you take your temperature.

Lady-Comp: If the measurement was not recorded after the second attempt, go to the settings, open the "Test Measurement/Demo Mode" menu and activate the test measurement. The measurement starts directly afterwards. If this attempt is also unsuccessful, please contact your local customer service.

Pearly: If the measurement was not recorded after the second attempt, please contact your local customer service.

If the measuring sensor is visibly damaged, do not use the device any longer. Please contact our customer service immediately.

Lady-Comp runs with 2 AAA batteries and Pearly with 1 AAA battery. You can also use rechargeable AAA batteries.

No. But be sure to use Lady-Comp daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement.

Yes, our fertility trackers can be used while breastfeeding. You should not start measuring until 6 weeks after birth. Since there is no way to predict the first ovulation after birth, Lady-Comp/Pearly will show yellow (learning phase/cycle fluctuation) until the first menstruation is entered postpartum. Once you enter your first period, Lady-Comp/Pearly will display fewer red and yellow days in the following 2-4 cycles as Lady-Comp/Pearly gets to know your unique cycle rhythm.

No. Lady-Comp/Pearly only records the first daily measurement. If you have concerns about a reading, please contact our customer service team.

Lady-Comp: Simply press the circle button and your fertility status will be indicated by the color of the display. If you want to see details, press the circle button twice more.

Pearly: Please press any button to turn on Pearly, and then press the center button to see your temperature, fertility indicator, cycle day and menstruation entry (if applicable).

Lady-Comp automatically switches off after 30 seconds, Pearly after 60 seconds.

Yes, please take your temperature throughout your entire menstrual cycle. However, on some days you should refrain from taking a measurement: for example, after excessive alcohol consumption, when you are ill (fever) or when you are feeling very bad.

Yes, you can. Lady-Comp/Pearly is also reliable during the transition to menopause. If your ovulation is delayed or doesn't occur, Lady-Comp/Pearly will display more red and yellow days. Using Lady-Comp/Pearly will allow you to directly observe the changes that are happening to your cycle.

Below the tongue in the pocket next to your frenulum and with your mouth closed. It is best to measure on the same side each morning if comfortable.

You can immediately start with the measurements. If you were using hormonal birth control before, stop using it before you begin measuring. The first bleeding after coming off hormonal birth control is a withdrawal bleeding and must not be entered as your period. If you are menstruating when starting with Lady-Comp/Pearly and you cannot enter all days, do not enter the current menstruation, but the next one. The first day of menstruation is important because it marks the beginning of your cycle.

No. Lady-Comp/Pearly will only record the first measurement of the day.

Press one of the 3 buttons and press the circle button to open the menu. Then, press the plus button to get to the alarm clock icon and press the circle button to select. Then, set the time with the help of the the plus and minus buttons to set the alarm time. Confirm the entry for each field by pressing the circle button. The alarm clock is activated when you enter a checkmark in the last field by pressing the plus button and confirmed with the circle button. An alarm clock symbol will appear in the upper right corner of the initial time / date screen. Your first measurement must be taken + / – 3 hours before your set alarm time.

One or two skipped measurements are not a problem; Lady-Comp/Pearly will simply use your earlier data to calculate your fertility. Multiple missing values per cycle will lead to a higher number of red or yellow days.

When you see a red light, it means that you are fertile. You can check your status anytime by activating Lady-Comp/Pearly.

It will take approximately 60 seconds to measure.

You can edit your menstruation input up to 3 days retroactively. Open the fertility window (Lady-Comp) or go to the fertility level (Pearly) and select the date you want to edit. Press and hold the circle button for 3 seconds to open the menstruation input field. You can either add the menstruation with the plus button or remove the menstruation with the minus button. To confirm the change, press the circle button. If you want to edit more days, simply change the date by pressing the plus button. If you want to edit several days post-hoc, please always start with the least recent day.

Yes. Lady-Comp/Pearly has been designed for women like you. Be sure to use Lady-Comp daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement.

Lady-Comp: Lady-Comp registers only one measurement per day. If the next day has not yet started, the measurement symbol is missing in the start screen.

Pearly: Measurements can only be taken once a day within the measurement period of 6 hours. Measuring period = measuring time of the previous day +/– 3 hours. The measuring period is indicated by the constantly illuminated measurement symbol.

Yes, you can always rely on Lady-Comp/Pearly. Be sure to use Lady-Comp daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement. If you have to skip a measurement after a sleepless night, Lady-Comp/Pearly will still reliably display your fertility status. Depending on where you are in your cycle, Lady-Comp/Pearly will react accordingly.

Yes, but be sure to use Lady-Comp daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement. If you don't get that during certain nights, there is no reason for concern. Lady-Comp/Pearly can handle skipped measurements from time to time.

Please contact your customer service for guidance.

Be sure to use Lady-Comp daily right after you wake up, before you get up and get active. For optimal use of Lady-Comp, we recommend that you have at least 1 hour of continuous sleep before measurement. Measure below your tongue, with your mouth closed.