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First Month, Thumbs Up
iBasal Digital Thermometer Canada July 5, 2015
My wife has been using this product over the past month. The functionality is straight forward. The manual is concise with plenty of pictures. Perhaps a bigger font would have been more beneficial. We are hopeful that within the next two months we'd be able to use this product to increase the probability of conceiving a child. Many thanks, Sean

The intelligent digital basal thermometer that displays your fertility status

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The world's most intelligent digital basal thermometer & fertility monitor!

The ibasal is much more than just a basal thermometer – it’s an FDA-cleared fertility monitor that is able to calculate your precise ovulation date and peak fertile days based on your daily temperatures and a variety of other fertility indicators. The ibasal works for women with irregular cycles as well as regular ones, and it continues to learn your body’s unique patterns month after month in order to provide exceptionally accurate results.

How Can Basal Body Temperature Be Used to Identify Ovulation?

Basal body temperature (BBT) charting is a tried and true method for determining precisely when during your menstrual cycle you ovulate. Your basal body temperature is the temperature at which your body rests, which tends to be a bit lower than your "normal" temperature, usually 97 point something degrees F versus 98.6 degrees F. By measuring your BBT each morning (after a full night's sleep) throughout your cycle you can detect the natural and subtle rise in your basal body temperature that occurs just after ovulation. This post-ovulatory shift in BBT is caused by increased production of the hormone progesterone, sometimes referred to as the "warming hormone".

How Does the ibasal Work?

With the ibasal, BBT charting just got smarter and easier. The ibasal is a computerized digital basal thermometer and fertility monitor that helps you maximize your chances of conceiving by accurately measuring your BBT and interpreting this data to produce a fertility prediction in advance of ovulation.

The ibasal is easy to use. To begin, simply set the time and date in the ibasal and set the alarm. The alarm will sound the next morning and each morning throughout your cycle, reminding you to take your BBT and ensuring reading consistency from one day to the next. The ibasal will measure and display your temperature to the 1/100 th of a degree (e.g. 97.41 F), show your cycle day, and populate a graph of your previous 10 readings on the LCD screen. This graph of readings allows you to easily see the shift in temperature that follows ovulation.

After collecting and storing your BBT readings, the ibasal will interpret this information to produce your own customized fertility prediction, allowing you to time intercourse in advance of ovulation for the best chance of conceiving in each cycle.

How is the ibasal Different than Other Basal Thermometers?

A regular off-the-shelf basal thermometer simply reports your temperature and nothing more. The user must then interpret the data and resultant chart in order to determine when ovulation occurred. In contrast, in addition to providing a highly accurate basal temperature reading, the ibasal actually interprets your data for you to tell you when you will ovulate and when you’re most fertile. Other data points considered by the ibasal algorithm include bleeding, cramping, cervical mucus consistency, and intercourse dates. The ibasal can even tell you when your results indicate a possible pregnancy!

Chart all of your menstrual cycle data, including your BBT readings, at - Fairhaven Health's FREE fertility charting website.


Increase conception odds with iBasal's automated BBT charting with fertility prediction!

  • Accurately measures your BBT and detects the temperature shift that follow ovulation

  • Interprets BBT data to provide a fertility prediction (after 2 cycles of charting.)

  • Reminder alarm ensures consistent timing of readings and charting accuracy

  • Measures BBT to 1/100th of a degree (e.g. 97.41 F)

  • Automatically displays your cycle day and a graph of your previous 10 readings

  • Allows you to record important information about your menstrual cycle, including bleeding, cramping, and cervical mucus changes

  • Uses symbols to display fertility, cycle phase, and possible pregnancy on the display

  • FDA-approved as an aid for conception

  • Replaceable 3v lithium battery and complete instructions included

See Who's Talking About the iBasal Digital Thermometer

In the News Read Customer Reviews

iBasal Digital Thermometer
4 Stars based on 17 Review(s)
Newport Beach, CA
4 Stars
I would recommend this item to a friend.

Does the job
October 5, 2015
The printing is kind-of tiny, but once you get it programmed and going, it's very reliable and easy to use.

1 Stars

Over complicated
September 9, 2015
This thermometer had potential. It has a variety of functions, but overcomplicates every task. Even to take your temperature takes a significant amount of time and can only be done if you set an alarm and take it either before or at the alarm. And you CANNOT get the alarm to stop unless you take your temp! And sometimes I would be taking my temp and the alarm would not would take an average of ten minutes for it to finally get a reading. It only measures in Farenheit, which unless you are American, is basically meaningless. It's not user-friendly - I had to constantly reference the instructions every time I wanted to use the thermometer, set the alarm, check previous temps, etc. And I found that there were errors in the instructions. Overall, a huge waste of money.

2 Stars
I would recommend this item to a friend.

Would would great for set sleep schedules.
July 12, 2015
I am rating for my experience, and the product. Our Ovacue "died" so we are using the ibasil until we have enough money to get a new ovacue. I am a pcos woman and using an Rx to help us ovulate, but doing timed intercourse. We have been using the ibasil thermometer for 6 mos now. The ibasil is nice in the fact that it beeps to wake you to temp. Set up was confusing and I'm not sure how it already put me into the next cycle without a period to go back to day 1. It doesn't work well if you are up a few times at night with a kiddo. Wish you could temp without the alarm for the nights you get 5+ hours of sleep in a row, but later than normal. I feel it takes my temp but it can't be accurate due to interrupted sleep. I am saying yes to recommend at the bottom, but only if that person has uninterrupted sleep patterns. Anyone with a schedule that needs a little flexibility to it, stick to a regular bbt thermometer.
Alarm to wake you up to temp is nice. Nice that you can make little notes with it and it stores it all. Nice size to carry if traveling. Cap covers the tip to protect from dusts. Toddler proof for when she grabs it (and you yell "no no no that's momma's....put it down"), she can't take an accidental reading.
Wish it took AAA batteries vs. coin batteries. It never turns off to sleep. Always show time on face and etc data. You must take temp at same time or it won't let you take it later. You're out of luck if you had to go tuck someone back in bed an hour before it goes off. Until you learn what buttons mean what or do what, you need the directions to program or add notes.

4 Stars
I would recommend this item to a friend.

First Month, Thumbs Up
July 5, 2015
My wife has been using this product over the past month. The functionality is straight forward. The manual is concise with plenty of pictures. Perhaps a bigger font would have been more beneficial. We are hopeful that within the next two months we'd be able to use this product to increase the probability of conceiving a child. Many thanks, Sean

3 Stars

Not for me
March 18, 2015
Although this tool may be useful to others. it was hard to figure out and set, i did not end up using it at all. The alarm goes off everyday at the same time and is not easy to use with lifestyle.
hard to use didn't like alarm

Amanda Wanner
Seattle, Wa
2 Stars

Not for those with active 2 year olds
March 17, 2015
Since I have a two year old I have not been able to use this product properly. If I could be walking around while taking my temp it would work fine, but since my son wont let me lay in bed in the morning I can't use iBasal. It is unfortunate, and feels like I wasted my money.
There is no way to turn the alarm off with out taking you temp. It's also heavy to hold up after first waking

Dover, DE
5 Stars
I would recommend this item to a friend.

Excellent Product
January 13, 2015
Its accurate. I didn't get pregnant but I'm also 41 years old and my age might have something to do with me not being able to get pregnant.
I didn't get pregnant.

4 Stars
I would recommend this item to a friend.

Does everything you could ask
June 2, 2014
This is very easy to use and it has been very informative in combination with ova graph. Really thankful for this product and the chance to understand my body and cycles in a more in depth way. I feel more in control of my fertility.
Easy fool proof with alarm.
Takes a long time to take temperature.

4 Stars
I would recommend this item to a friend.

Good, but needs improvement
May 26, 2014
This is a great digital thermometer, the best I have found on the market. Pros: I love that it is accurate to 1/100th of a degree and that it can store 10 days worth of data.The alarm is also a huge plus. Cons: buttons are two sensitive, sometimes a single push can depress the button twice. The most important con for me is that the instructions are not accurate. I have yet to figure out how to input the start of my second cycle because the instructions are not working. Finally, the first time I took my temperature it took 8 minutes to register the first temperature (the first beep) and an additional several minutes to register the last few temperatures (the final set of beeps). I now leave the thermometer in until the last set of beeps because the first time I took at out after the first beep, it continued to beep incessantly for 10 minutes. I now just input all the temperatures into an app on my cell phone and don't use all the fancy features of the thermometer since I can't figure them out. Seems like a waste of money, but the alarm and the accuracy of the temperatures makes it worth it for me.
Accuracy Alarm Ability to save 10 days worth of data
Buttons too sensitive Instructions are not accurate

5 Stars
I would recommend this item to a friend.

Pregnant within Three Cycles!
March 10, 2014
My husband and I were casually trying for six months before I decided to take charge and start charting my basal temperatures. This thermometer helped me pinpoint my exact dates of ovulation, which was not an easy task prior to this. I got pregnant on my third cycle and couldn't be happier.
stores temperatures, alarm clock, pregnancy prediction
hard to use at first

Lafayette, Indiana
5 Stars
I would recommend this item to a friend.

January 14, 2014
I was diagnosed with the possibility of having PCOS. Not enough symptoms to fully diagnose, but I was definitely having difficulty ovulating after I stopped taking BC. So I was introduced to a great book by my doctor called Taking Charge of Your Fertility and decided that I would start charting so I could see what was really happening with me as my husband and I have decided that we are TTC. I bought this thermometer and have been completly pleased with it's performance! I love that it has an alarm and that it stores my data so that I can go back and chart if I happen to not get the information entered every day. I'm only on my second cycle so it hasn't fully started predicting things for me, but I'm throughly pleased with what I'm seeing!
Alarm Stores Data Graph
Remembering all the different symbols

Flat Rock, Michigan
4 Stars
I would recommend this item to a friend.

Great Product
December 10, 2013
I decided to try the ibasal thermometer after a few years of trying to get pregnant without any luck. I had tried different basal thermometers before and always had trouble with them. The ibasal Thermometer has been a great addition to our ttc adventure. With using this I was able to figure out that unlike some other okps did not fully work for me. I found that I usually ovulate about 2-3 days after my first positive opk. Without this thermometer I would have never figured this out. I have only been using this for 3 cycles but am so glad that to have it. I would recommend this for anyone ttc especially those new to using a basal thermometer and those that have trouble sleeping. It has been great having the alarm on the thermometer it's self and not having to set another device to wake me up. If you are looking for a great aide to help increase your knowledge of your cycles and your body I would highly suggest this product for that.
Storage of temperatures. Telling you where you are in your cycle. The ability to record other information.
Time it take to record temperature

Los Angeles
5 Stars
I would recommend this item to a friend.

Best basal thermometer available.
August 15, 2013
This is the best basal thermometer out there. It is worth every cent.
the alarm precise temperature reading readings graph fertility prediction

Brisbane, Australia
5 Stars
I would recommend this item to a friend.

Perfect for Poor Sleep Habits
June 16, 2013
This has been a god send in finally being able to track my BBT! I have very disrupted sleep,usually in blocks of 3-4 hours a night. Trying to use a normal thermometer was near on impossible. But with the iBasal I have finally seen a ovulation dip and temp surge! The internal memory is a godsend and the alarm is super handy. Yes it is a little slow to take the recording [the first is in 3 min the second verifying beep is about 5] usually I have fallen back asleep by that time with the iBasal still in my mouth =P I just turn on my side and rest it in my hand on the pillow and I have had no troubles with it at all. I don't use the software, but Fertility Friend has been amazing with tracking! Def recommend this to any woman with poor sleep habits =)
internal storage ease of use once setup alarm is great
a little difficult to setup at first

Celeste P.
5 Stars
I would recommend this item to a friend.

Perfect for NFP!
April 25, 2013
I use this device for natural birth control, not as a fertility monitor to help me get pregnant, though I will likely use it that way eventually. I bought it after researching the lady comp and baby comp monitors (which sell for about $500!) and as far as I can tell they do the exact same thing. It has been spot on accurate for me so far and I now feel very comfortable going with the monitor’s recommendations. Things I love about the ibasal: The alarm feature, the fact that it does everything right on the monitor itself and I don’t need to go to a website, its easy to use, I don’t have to take hormones every day (yay!!) Things I don’t love: It really, really should have a light on it so that you can read the temperatures in the dark. Duh!! It’s heavier than a regular thermometer, so my mouth gets tired. Screen could be larger so its easier to read. All in all, it has been a great value for us.
see review
see review
Best Uses:
natural family planning trying to get pregnant

4 Stars

Unsure about accuracy
April 18, 2013
I like some of the functions of this thermometer but Im not sure its all that accurate. I have been temping on two thermometers and recording results on two different sites. This month the ibasal says I ovulated on CD13 and my other thermometer says CD14. I think I Oed on CD14 because of the ovulation pains I felt all day. The ibasal also always gives a higher temp than the other thermometer. Last month they both gave temps that coincided with the same ovulation day. Now Im confused but I think my other thermometer gives a more accurate reading.
I like the neat functions.
Takes two months for it to learn your cycle.

5 Stars
I would recommend this item to a friend.

Basal peace of mind
February 27, 2013
Like this thermometer because it does the calculating for me. I just stick it in my mouth when it tells me, take it out when it tells me. Then we baby dance when it tells me. Now if it can just tell me when my baby will arrive! I love the thing, but my husband would like to throw it out our window because of the alarm. Hey, a girl's gotta do what a girl's gotta do!
No guesswork
Alarm function doesn't take no for an answer

Rated 4 based on 17 reviews
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