The Best Basal Thermometer of 2019 to Chart Your BBT

A list of popular basal thermometers was reviewed to determine which ones were most accurate, provided fast results, and were user-friendly. We selected these thermometers based on these criteria to help you find the best basal thermometer to chart your way to pregnancy.


If you need a very sensitive and clinically accurate thermometer that has the capacity to adjust to your actual body temperature, the Multi-Function Digital Basal Thermometer is the best one among the thermometers below. 

Unit of Measurement: Degree Fahrenheit and Celsius | Basal Body Temperature (BBT) Chart: Included | Battery: Replaceable | Warranty: 1 year

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What is Basal Body Temperature?

Basal body temperature (BBT) refers to your body temperature when you wake up before you perform any activity.

In addition to changes in the levels of luteinizing hormone and consistency of cervical mucus, women experience a change in their temperature during every menstrual cycle, which can be used to indicate ovarian function.

In general, women experience a 0.2–0.5°C increase in BBT shortly after ovulation and this persists until the next period.

As a result, a woman with ovulatory cycles experiences a biphasic shift in BBT during her cycle—a temperature shift that can be used to confirm ovulation.

Top Basal Body Thermometers Comparison Chart

Basal thermometers are designed to detect the small changes in temperature that occur during a woman’s cycle. Below is our list of top-rated basal thermometers.





Multi-Function Digital Basal Thermometer



Mabis Basal Thermometer



iBasal Digital Thermometer



iProvèn’s Clinical Basal Thermometer



Wink by Kindara



Easy@Home Smart Basal Thermometer



Non-mercury Glass Basal Thermometer



Geratherm Basal Mercury Free Thermometer



1. Multi-Function Digital Basal Thermometer

iSnow-Med Basal Thermometer for Ovulation with Large Memory (60 Days), 0.09F Accuracy, Store Time&Date&BBT, C/F Switchable (Pink)

This is an easy-to-use thermometer with a backlight monitor so you can see your reading clearly in a dark room. Although the Multi-function Digital Basal Thermometer will take slightly longer to display temperature than most thermometers listed here, it is designed to be very accurate.

Another great feature of this thermometer is its capacity to store up to 60 days memory, including the temperature, time, and date. You do not have to write down your data every time you measure your basal temperature.

With this innovative technology, you can simply scroll up or down to view your previous temperature measurements and draw it on your chart later.

2. Mabis Basal Thermometer For Natural Family Planning

MABIS Basal Thermometer, Digital BBT Thermometer, Basal Body Temperature Thermometer For Natural Family Planning, White and Pink

The Mabis Basal Thermometer is generally recommended by clinicians for tracking ovulation. It is designed to conveniently monitor basal body temperature, as it can recall the last reading. Thus, day-to-day variations in temperature can be easily detected and tracked.

It is approved by the Food and Drug Administration (FDA) and has been shown to be clinically accurate in measuring BBT. It uses a replaceable alkaline button cell battery and comes with a pack of ovulation charts, enough for 12 cycles.

This thermometer is easy to use for charting ovulation and has the added benefit of coming with a 12-month supply of ovulation charts. Unlike some digital thermometers, it beeps quietly when turned on and when it is done reading the temperature.


  • It provides quick results (usually within 60 secs).
  • It provides accurate results and measures temperature to the 1/100th of a degree, which is necessary for tracking and pinpointing ovulation.
  • Results are displayed on an LCD screen and are easy to read.
  • The thermometer has an in-built system that recalls your last temperature so that you can easily detect day-to-day changes in temperature.


  • The LCD display lacks a backlight, making it difficult to read results in a poorly lit room. 
  • The power button needs to be pressed hard enough to turn on the device.

3. iBasal Digital Thermometer

iBasal Digital Thermometer

This FDA-approved digital thermometer is a perfect choice for women with irregular cycles. It measures temperature to the 1/100th of a degree and displays results in Fahrenheit.

The device can display your cycle day and even generate a graph of your ten previous readings. It uses a replaceable lithium battery and has a small screen that displays data using symbols.


  • It accurately measures basal temperature.
  • It can predict your fertile periods based on your BBT data, saving you the trouble of interpreting the data.
  • Its reminder alarm ensures that you consistently record your temperature at the same time every day.


  • It can be challenging to use, with some women having difficulties in properly setting the device.
  • Temperature can only be taken one hour before or after the alarm goes off. Thus, you might need to reset the alarm if you wake up at different hours on business days and weekends.
  • Once you fail to input data (cervical mucus, menses), you cannot enter them the next day.

4. iProvèn’s Clinical Basal Thermometer

Basal Body Thermometer, BBT-113Ai-US-1 for Temperature Tracking When Trying to Conceive (TTC), Natural Family Planning, Accurate to 0.01 Degree, Highly Sensitive Ovulation and Period Monitor

Highly accurate, this clinical basal thermometer measures temperature to the 1/100th degree. It is also referred to as an Actual Body Temperature thermometer due to its capacity to accurately adjust to your actual body temperature.


  • It provides accurate results by slowing adjusting to your basal temperature and can take approximately one minute to display the result.
  • It beeps when it is done recording temperature.
  • It stores your last reading; however, you need to save it after measurement.


  • It lacks a backlight, making reading difficult in the dark.
  • It records temperature only in Fahrenheit and lacks a function to convert it to Celsius.

5. Wink by Kindara

Wink by Kindara - App Integrated Fertility Thermometer - Digitally Track Your Fertility and Ovulation (with Android or IOS App)

Kindara has been around since 2014, and it has gained popularity among women trying to conceive. This thermometer is unmatched in terms of design. Its monitor is equipped with a backlight to help you read in low light situations.

This thermometer is designed to measure your oral BBT readings, which you can obtain within 20 seconds. With wink, you don’t need to record your temperature readings or worry about losing your data.

The thermometer, whose design is based on the Fertility Awareness Method, can be connected to an app, making it easier for you to chart your BBT readings efficiently and conveniently.

Additionally, the app permits you to connect and interact with other women, which is a plus if you’re new to the fertility awareness world.


  • It is convenient and easy to use.
  • It is highly accurate and measures temperature to the 1/100th of a degree.
  • The app is available for Android and iOS devices. All you need is enable Bluetooth on your mobile device so Wink can sync your temperature automatically with the app.
  • The thermometer is rechargeable, so you don’t need to worry about getting new batteries or replacing a dying thermometer.
  • The thermometer is so silent that even your partner won’t even know when you’re using it. Wink will vibrate gently in your mouth when it is done measuring your BBT.


  • It needs to be brought to room temperature before use The device should be handled with care because it isn’t solidly built.
  • It is expensive and might not be a good choice if you’re on a tight budget.

6. Easy@Home Smart Basal Thermometer

Easy@Home Smart Basal Thermometer, Large Screen and Backlit, Ovulation and Period Tracker with Premom(iOS & Android) - Auto BBT Sync, Charting, Coverline & Accurate Fertility Prediction #EBT-300

The Easy@Home Smart Basal Thermometer can help you if you are trying to conceive or avoid a pregnancy (especially if you do not wish to use hormonal contraception). This ovulation tracker allows you to pinpoint your most fertile days so you are in control.

The device is easy to use and simply requires that you download the Premom App, sync via Bluetooth, and that’s it! After measuring your BBT, the app will automatically chart the information and calculate your ovulation date and your expected period date.

The Easy@Home Smart Basal Thermometer is compatible with Apple and Android and is a good choice for women wishing to track their reproductive and menstrual cycles.


  • It is convenient and easy to use, as you don't need to manually record your data.
  • It is highly accurate and measures temperature to within ± 0.09°F/ 0.05°C.
  • The Premom Ovulation Calculator app is available for Android and iOS devices.
  • The thermometer uses a watch battery that has a power life of about three months.
  • The thermometer beeps gently when it is done recording.
  • It possesses a backlit display for easy reading in the dark.


  • The app should be open if you need your data to be automatically recorded to the app.

7. Non-mercury Glass Basal Thermometer

Non-mercury Glass Basal Thermometer

This lab-certified glass thermometer is a mercury-free device that is designed for use in charting ovulation. The thermometer uses a liquid alloy that is considered safe contrary to mercury, which is reportedly toxic and associated with health hazards.


  • It measures temperature accurately to the 1/10th degree.
  • It comes with a magnifying case to ease reading.
  • It can be easily cleaned with soap and water.
  • No need to worry about replacing batteries.
  • Works well for oral, rectal, and vaginal temping. However, you want to make sure you do not use it orally after using it rectally.


  • It can break if accidentally dropped.
  • It takes long to read (approximately 5 minutes).
  • It has to be shaken prior to measurement.

8. Geratherm Basal Mercury Free Thermometer

Geratherm Basal Mercury Free Thermometer - 1 ea

This German-made glass thermometer is designed to for women to track their fertility. This highly sensitive thermometer is safe in that it doesn’t contain mercury.

The calibration strip is easy to read and it even has a magnifying glass to enlarge the enlarge the temperature display and facilitate reading. Also included with the thermometer is a BBT chart to record your temperature readings.

This thermometer is approved by the FDA. You can use it to take your BBT orally or rectally, but have to use one method consistently to avoid errors. The thermometer can be easily and safely disinfected or sterilized after use. 


  • It is very sensitive.
  • It is very straightforward to use.
  • The magnifying glass makes it easier to read the calibration strip.


  • The liquid can be particularly difficult to shake down after use.

How to Find the Best Basal Thermometer: Things to Consider When Buying One

1. Does the thermometer have a memory recall?

With the recall feature, you don’t need to note down the temperature immediately after taking it. You can do that later when you turn on the device, and it shows you the last recorded value.

2. Does it beep to indicate when the thermometer has finished recording?

It is not unusual to fall back asleep when you’re taking your temperature, so the beeping sound might just help to waken you when the device has finished measuring your temperature.

3. How much does the device cost?

Thermometers come in a vast range of prices, depending on the type and brand. Higher brand names tend to be more expensive (up to $60), but you can get a good basal thermometer for $20–30.

Also, consider reading reviews before deciding to purchase a cheaper brand just so you don’t end up with a thermometer that would last only a couple of months.

4. Does the thermometer measure to at least the 1/10th of a degree?

This is to ensure that it can accurately measure the small changes in the temperature that occur during a woman’s cycle and therefore help in determining when ovulation occurred.

5. Do you wish to purchase a glass or digital BBT thermometer?

Both types have their advantages and disadvantages, which you should consider before deciding which to buy. In the next section, you can read the pros and cons of both types.

Types of Basal Thermometers

Digital thermometers


  • Typically measure temperature within 30 to 60 seconds.
  • Some have a display screen with backlight, making it easy to read temperatures in a poorly-lit room.
  • They cannot break easily.


  • They use batteries, which should be changed when recommended.
  • Some devices are not waterproof.
  • They might display faulty readings, especially when the batteries start to run down.

Glass thermometers


  • They measure temperature accurately. Mercury has a high sensitivity and thermal conductivity and is preferable over other spirit-filled thermometers; however, mercury can be a toxic chemical and care should be taken when handling mercury-filled thermometers.


  • They are more difficult to use and have to be shaken before each use.
  • They can easily break if accidentally dropped.

Tips for Use

If you’re trying to conceive and planning on charting your temperature, you need some tips to determine when you’ll probably ovulate. Read our previous post to find out more about how to use a BBT thermometer to get pregnant.

Temperature Measurement Sites

Body temperature measurement sites for basal thermometers commonly include the mouth (oral) and deep body (rectal and vaginal).

Your temperature reading will vary if taken at different sites, so you must use one method consistently to avoid getting inaccurate results.


Most women prefer this method for the sake of convenience. Since temperature variations exist within the oral cavity, i.e., lower temperature in the front of the tongue and higher in the back, you need to make sure you use your BBT thermometer as recommended by the manufacturer.

You need to take measurements with your mouth closed and leave the thermometer longer, especially with a glass thermometer, which might require up to three minutes to accurately measure your BBT.


Some women feel comfortable measuring their BBT vaginally. However, vaginal BBT measurement is not advisable for women with vaginal infections.

Given that the vagina is very rich in bacteria, you should always clean your thermometer after each use if you plan to measure your BBT vaginally. (It is best to follow the manufacturer’s cleaning instructions.)


This is the least hygienic method of measuring BBT, albeit the one that provides the most stable readings. If you plan to use this method, it is highly recommended that you disinfect or sterilize your thermometer after each use.

Frequently Asked Questions about Basal Thermometers

1. How do you use a basal body thermometer?

  1. It is essential that get at least three hours of uninterrupted sleep every night so that you get an accurate reading.
  2. Take your temperature first thing when you wake up. By first thing, that means even before you get out of bed or do anything else such as brushing your teeth, eating, drinking, or smoking.
  3. Use the thermometer as indicated by the manufacturer. This means that you should have read the instructions of the manufacturer so that you understand how to use it to obtain the best results.
  4. Some thermometers beep when they’re done measuring your BBT, while others do not. If you’re unsure about how long you should leave your thermometer in place, a period of five minutes is enough for the device to measure your temperature.

2. What is the best way of measuring basal body temperature: oral, vaginal, or rectal temperature?

Any of the routes (oral, vaginal, or rectal) is fine, but use the method that you find convenient. As mentioned above, many women find that it is more convenient to measure their BBT orally.

3. What is the best basal thermometer with app?

There are so many basal thermometers that work alongside an app. Most of the apps that work with BBT thermometers also monitor other fertility signs such as changes in cervical mucus or cervical position.

In our list above, Kindara is the winner when it comes to a basal thermometer with app. You can read more about other fertility tools that track BBT and work with an app such as Femometer, Ava bracelet, and Natural Cycles.

4. Is a basal thermometer the same as a regular digital thermometer?

No, it is not. Although BBT and regular digital thermometers work in the same way, they are different in terms of their accuracy and purpose.

A BBT thermometer is more accurate than a regular digital thermometer. A BBT thermometer is accurate to 0.1 degree F whereas a regular digital thermometer is accurate to 0.2 degrees F.

Small changes in BBT, typically in the range of 0.4 to 1.0 F degrees during a woman’s cycle, are required to predict ovulation. Thus, the increased accuracy of a BBT thermometer permits you to chart your BBT more accurately than with a regular digital thermometer.


With the various types of BBT thermometers available on the market, you might not know which one to choose. This post is intended to help you understand more about thermometers and how to choose one that might suit your needs.

It is necessary that you choose a reliable thermometer so that you can predict when you’ll ovulate and consequently increase your chances of getting pregnant. You might want to consider the higher quality brands since they have been reported to be more accurate and reliable.

While the accuracy of modern thermometers is unmatched, we have included at least one top glass thermometer in our review to help you decide whether this might be just what you are looking for in a basal thermometer.

Further Reading

Ayoola AB, Slager D, Feenstra C, Zandee GL. A Feasibility Study of Women’s Confidence and Comfort in Use of a Kit to Monitor Ovulation. J Midwifery Womens Health. 2015 Sep-Oct;60(5):604-9. doi: 10.1111/jmwh.12347. Read the article.

Wark JD, Henningham L, Gorelik A, Jayasinghe Y, Hartley S, Garland SM. Basal Temperature Measurement Using a Multi-Sensor Armband in Australian Young Women: AComparative Observational Study. JMIR Mhealth Uhealth. 2015 Oct 5;3(4):e94. doi: 10.2196/mhealth.4263. Read the article.

McLachlan RI, Yazdani A, Kovacs G, Howlett D. Patient education. Basal body temperature chart. Aust Fam Physician. 2005 Mar;34(3):139-40. Read the article.

Weischer M, Friis-Møller A, Bremmelgaard A. [Measurement of basal temperature with the Tempadot disposable thermometer for oral use]. Ugeskr Laeger. 1991 Dec 9;153(50):3538-40. Read the article.

Collins WP. The evolution of reference methods to monitor ovulation. Am J Obstet Gynecol. 1991 Dec;165(6 Pt 2):1994-6. Read the article.

Princila M

Hi! Thanks for visiting. I'm a science geek and proud mom of two adorable kids. I love to research, learn, and write about personal improvement, healthy living, and fertility. On this site, I'll be reviewing the best fertility tests and discussing tips to help couples trying to conceive. I appreciate you visiting my website, and I'd be glad to answer any questions you may have. Visit our About page for more details and to connect with me.

Click Here to Leave a Comment Below 36 comments
Jim - February 5, 2017

Interesting article. There’s no doubt about it, every home should have a thermometer in the first aid kit – especially if there are very young kids there.

Very young children often can’t tell you how they feel, and putting your hand on their forehead is no guide at all. A non-invasive one is best for babies and toddlers I think.

    Princila M - February 5, 2017

    Thank you for visiting, Jim.

    I agree with you. Sometimes you can’t tell whether a child has fever just by placing your hand on their forehead. It’s funny that some parents do not seem to know that it is always handy to have a thermometer at home. Thermometers do not cost a fortune, after all!

Blame - February 19, 2017

Very nice. I have a friend who was trying to get pregnant for three years. However, even though she religiously records her basal body temperature everyday, she doesn’t seem to be getting anywhere. It could be hormonal fluctuations due to stress or something, but she is suspecting that her basal thermometer is no good. You have some fine recommendations here. I can tell her to check it out and see if it makes a difference. I don’t think it will make her get pregnant any faster, but a better and more accurate measurement sure helps.

    Princila M - February 20, 2017

    Hi Blame,

    I think your friend ought to see a physician. She has been trying for way to long to get pregnant. I always advise couples to seek physician support if they’ve been trying for 6 months without success.

    Have a great day!

Martina - February 24, 2017

We have the Exergen Temporal thermometer in our home for the entire family and love it. As a matter of fact, our kids broke our first one, and we made sure to replace it with the same one, that’s how much I love it. Also, Ive never had to chart ovulation for getting pregnant, but that makes sense to chart temps since your temperature is slightly higher on the day you ovulate, I believe.

Judy - February 24, 2017

I read your article on the various types of thermometers with deep interest because I have a nine-month old grandson who recently had a fever.

I must say that the forehead thermometer seems as if it would be a lot easier to use than a rectal one, and it makes sense because the forehead is the first place a parent or grandparent touches to check for a fever.

Thermometers have really become very sophisticated.
Thanks for the article.


    Princila M - February 24, 2017

    Thank you, Judy. I’m glad you found this interesting. I agree with you. Thermometers have really become sophisticated.

Ugomez - February 26, 2017

Hi! greate I read you article and is nice to know more about this basal thermometer because when we are ready to shop a most needed thermometer we tend to go for the cheapest with out even look at the quality and the benefits behind one and other. It awesome to have this type of information so when I am looking for one I don’t just look at the cost but in what circumstance I can use that particular thermometer. Great and well explanation of the Basal thermometer. Thank you so much Prinz Great article

    Princila M - February 26, 2017

    Hi Ugomez,

    I’m glad you found my post helpful. I hope you also found the perfect thermometer for your household.


Ann - March 1, 2017

Hi, Prinz, I’ve found myself in the market for a new thermometer, so I’ve been doing some research into the advanced ones on the market today. I’m still using the thermometer I used 35 yrs ago when my boys were small. Overdue for an upgrade for sure!!! I have small grandchildren and I want a good one.

Your information and reviews are researched extensively and extremely well written. I had never heard of an Infrared thermometer so the information and review you provided were instrumental in making me feel well informed and confident in my ability to choose the Tempir Body Temperature Thermometer.

I’m well past the age where I would be looking for info on fertility but I would definitely recommend your website to anyone in need of this information. The extent you’ve gone to provide the most accurate and up-to-date information make this a go to website. A lot of women don’t understand how their own bodies work around fertility and reproduction.

Your posts are written professionally, easy to understand and complete. I’d never heard about a saliva test. Very Cool!
I found your website amazingly interesting and extremely informative.

Thank you for allowing me to view your website. I wish you all the best.

    Princila M - March 1, 2017

    Thank for visiting and commenting, Ann.

    I’m glad you found this review helpful and hope it would be useful to other people who are looking for a good thermometer. I would also be curious to know about this thermometer that you’ve been using for the past 35 years. That’s one thermometer! 😉


orlando - April 9, 2017

Great information on the variety of types of Basal Thermometers.
One of the things I see is that all of them are very closely rated.
Therefore I think people would pick according to price, since all of them measure temperature to the 1/100th of a degree. I’m old school.
I would pick the glass Basal Thermometer. I am most familiar with that type from raising my kids
All the Best

    Princila M - April 10, 2017

    Hi Orlando!

    Thanks for visiting and commenting. I’m glad I included at least one popular glass thermometer in this review. I knew there had to be some ‘old school’ folks among us.
    Wish you the best too.

Rene - April 9, 2017

I was excited to see your website about the thermometers women can get to use to track their ovulation. It’s a website that is totally uncharacteristic from the ho hum bore that you see so much of these days; normally teaching something like SEO or link sharing, or even website building.
There is so much to know and understand what other women must go through in order to become pregnant. The fact that they must get to know their body so intimately. I chuckled a bit about the “beeping that the thermometer makes when it’s finished, just in case one dozes back off to sleep”; a funny picture came to mind at that moment. I supposed you’d have to be a female to appreciate it though.
Back in the day when I was a young girl, my parents were very prudish people so there was very rarely any sexual anatomy conversation. I learned it all in school or from my friends or from my very first boyfriend. He was quite knowledgeable about the sexual thing. I remember hearing my mom talking to her friends about certain things (female odor was one) and thinking about how gross women must be.
As women might have problems getting pregnant, learning about their ovulation is really an important piece of the plan. When it starts and when it’s over and the best time to get pregnant or not? I always knew when I was ovulating because mine was so very painful, especially after my first child. Mylibido was off the charts at that time though, and I never had a problem getting pregnant so call me blessed I assume compared to the gals who have problems getting that way.
Your site is pretty awesome because it’s so chock full of information about thermometers, pros and cons, prices, and even the timer beep! Lots of great information for those wishing to learn about the best thermometer for timing their ovulation. Without it, there is no pregnancy.
Thanks for sharing such awesome information.

    Princila M - April 10, 2017

    Hi Rene,

    It is a pleasure reading your thorough comment. I can say you’re one of the nearly 25% of women who have classic ovulation signs. Unfortunately, some women, especially those with irregular cycles or polycystic ovarian syndrome, have difficulties pinpointing when they’re ovulating and might need a bit of help.

andy - May 21, 2017

Hi Prinz, this articles gives a full range of Best Basal Thermometers which can be selected depend on the type of usage from oral, rectal and vaginal temping. I personally used both the mercury filled thermometer and the digital thermometers. For the infrared technology thermometers that detect temperature on the forehead could it effect the brain of a child or baby if use frequently. What is your opinion for this type of thermometers?

    Princila M - May 21, 2017

    Hi Andy,

    Thanks for visiting and commenting.

    As far as I know, infrared radiation is safe and does not cause harmful thermal injury. Plus, I haven’t heard of any study that found a relationship between infrared and brain injury.

    Like you, I’ve used both types of thermometer; however, I prefer digital thermometers.

Stevie B. - January 10, 2018

Thanks for the tips. I’ve used a number of different BBT’s, but none on your list. I will check your top recommendation out.

It can be very difficult to take an accurate BBT so this article was very helpful.

Do you have any tips on the wearable fertility monitors? I find I have trouble waking up to take my temp at the same time every day. And sometimes I just forget to take it.

    Princila M - January 10, 2018

    Hi Stevie,

    Thank you for joining in the discussion. Yeah, I agree with you. It is sometimes very difficult to take an accurate BBT. I used to find it challenging to wake every morning at the same time to take my temp. I’ve even fallen asleep while taking my temp!

    There’s this wearable thermometer that you can find on ebay called the IOB Thermometer. It is made of two little discs that you tape under your arms before going to bed, and it records your temperature every four seconds. The data are sent to an app via Bluetooth. 

    I still haven’t bought it yet because I haven’t found a seller who can ship this to Saudi. I reckon with the IOB, I’ll be able to wake up and immediately read my temp measurements without worrying about the accuracy of the data since these would be stored in the app. I hope I can finally find someone who can ship to my location so that I can compare data obtained from the IOB with those recorded from a standard digital basal thermometer.  

    Thanks again for visiting.

Briana - January 14, 2018

I wish I had this information a few years ago. My husband and I had difficulty conceiving and a good basal thermometer may have helped. I noticed though that none of the digital thermometers that made the list are smart thermometers that can be connected to a cell phone. I have a regular thermometer that is a smart thermometer and I love it. Do you know of any smart basal thermometers?

    Princila M - January 14, 2018

    Hi Briana,

    Thank you for taking the time to read and leave a comment.

    Yes, I didn’t include smart basal thermometers here. Regular basal thermometers are as excellent as smart ones, although I do agree that when it comes to data storage, smart thermometers beat regular ones by far. However, I decided to include reliable thermometers that even people who are technology challenged would feel comfortable using. You won’t believe the number of women who prefer to keep it simple when it comes to tracking their fertility. Notice that I also included the traditional glass thermometer for women who do not really fancy tech.:-) Of course, I didn’t forget women who prefer more advanced devices. I reviewed two smart basal thermometers in this post. You can check it out whenever you’re free.

Mohamed - January 16, 2018

Hey Princila, awesome post and I love your website’s design!

I definitely need to get one of these thermometers.

THe other day my daughter was acting funny, I had hunch she was sick but I couldn’t really tell.

I’d hate for her to have something wrong without me even knowing.

Thanks for the reviews, they helped with my research!

    Princila M - January 17, 2018

    Thanks for visiting and commenting, Mohammed. I’m glad this helped with your research.

    Regarding your daughter, I hope she’s okay. I’m guessing she might not necessarily need a basal thermometer, although it can essentially do the same job as a regular thermometer.


Dr. Baker - January 22, 2018

What an interesting article! Thank you for this great information!

I have a friend who has tried and tried to get pregnant with her second child over the last 7 years! I will definitely be talking to her about this! I’m not sure that she has ever even thought of this technique.

Thanks again! I can’t wait to pass this along!

    Princila M - January 24, 2018

    Hi, Dr. Baker!

    Thank you for the comment. 

    Seven years! That’s such a long time. I’m wondering whether your has not seen her obs-gyn yet. It would really help to know whether there is no underlying medical condition that is preventing her from conceiving again. Wishing her the best!

Ha - March 10, 2018

Thank you for doing the research and sharing the information about the Basal Thermometers.

I bought a cheap digital one and forgot all about it until I needed. It was not reliable because the battery died. I will have to look for a better quality one in the near future. This article is very useful in helping me decide what I want.

    Princila M - March 10, 2018

    Hi Ha,

    I’m glad you found this helpful. As for cheap thermometers, I believe there’re some good ones that can do the job. The Mabis thermometer, for example, currently costs less than $10 (I’m not sure for how long) and it does the job. Hope you find a thermometer that meets your needs and budget.


Melinda Curle - April 27, 2018

If done correctly, charting your fertility can help you get pregnant or avoid pregnancy. I know that my sister was able to use this basal thermometer method to determine her fertile dates and she was able to get pregnant when she wanted to. She was also able to avoid pregnancy for about five years using this method. If you are relatively healthy, it can be pretty accurate.

    Princila M - April 27, 2018

    Hi Melinda,

    Thank you for your contribution. 

    I agree with you. Although charting can be pretty tricky, it can help couples trying to get pregnant achieve their goal (or serve as an alternative method for couples who do not wish to use hormonal contraceptive to avoid a pregnancy). However, I find it more effective when BBT charting is used in conjunction with other methods such as cervical mucus monitoring.

Norman - April 28, 2018

Hello and thanks for sharing the best basal thermometer that I also believe that will be a great help to women who have entered this stage of their lives and will truly like to know how they are doing.
Your post is well detailed and very informative. The information that you have provided will be a good help to so many women.

    Princila M - April 28, 2018

    Hi Norman,

    Thanks for visiting. I’m glad you found this post informative. Some women do not know what to do until they’ve gotten to this stage and find themselves lost in the sea of information on the Internet. I hope a few persons around you can also learn from this.

    Thanks again and have a great weekend. 

Dave Sweney - May 1, 2018

Based on your comparison charts and data, it appears that the conclusion you have reached is the same as I would decide on…

The best basal thermometer that will help people I have found to now is included in that list of products you compare – the non-mercury glass basal thermometer…

This is the model that my daughter used to assist her and her husband’s effort to have a second child. It did the job (the result is now 3 years old and a beautiful little girl)…

If they decide to go through this process again, I would recommend an upgrade to the thermometer you rate as best! In that light…

I have sent the link to this page to my daughter so she can look at your findings as well. You made it very clear which is the best!


    Princila M - May 2, 2018

    Thanks for joining the discussion, Dave.

    I’m glad to hear things worked out well for your daughter. 

    I still own my non-mercury glass thermometer, although I also have two digital thermometers. Call me old-fashioned, but I still fancy using a traditional glass thermometer. 

    Thanks again for visiting and commenting. I hope you visit again.

Ryan - May 6, 2018

Your website theme really suits your niche well. The content was spot on and it was nice to read about the different types of basal meters. This is a very informative article and I hope the appropriate people can benefit from this 🙂 great job on the site it looks good.

Win Bill Huang - May 11, 2018

I was actually looking for the best basal thermometer. My wife used to use one before we gave birth to our baby Lilyanna. However, she gave it away to a friend who was pregnant afterwards.

Of course, my wife is not pregnant right now, but that is not the reason why I need a thermometer. I noticed that a lot of thermometers out there are barely accurate. Sometimes I am concerned that my daughter might have a light fever. Basal thermometers are designed to be sensitive to even a small change in temperature so its accuracy shouldn’t be questioned.

The iProven’s basal thermometer looks good with all the good ratings. It is not what doctors recommend but it is what other buyers have recommended so it shouldn’t be too bad. One concern I have is that my daughter will often not stay still for a temperature check. Is there a way for this thermometer to read the temperature faster?

    Princila M - May 11, 2018

    Hi Bill!

    Thanks for visiting again.

    Don’t worry about getting a basal thermometer if you plan to use it on your daughter. A regular thermometer would do the job. And if your daughter is very fussy, you can try a forehead thermometer. It’s easy to place it on the child’s forehead and read the results within a few minutes. Plus, there are models that look like a small tape that you can easily apply to the forehead. 

    All best with your daughter!


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