iProven Basal Body Thermometer with Backlight & Big Digits, 1/100 Degree High Precision, BBT for Ovulation Tracking, 30 Memory Recall, Accurate Fertility Temperature Tracker
Original price was: $17.97.$14.97Current price is: $14.97.
Price: $17.97 - $14.97
(as of Nov 15, 2025 08:42:01 UTC – Details)
From the brand
Thermometers
Pulse Oximeters
Product Dimensions : 6 x 0.01 x 0.01 inches; 2.4 ounces
Item model number : BBT-127
Batteries : 1 Nonstandard Battery batteries required. (included)
Date First Available : November 29, 2022
Manufacturer : iProvèn
ASIN : B0BNL95N2V
Best Sellers Rank: #9,275 in Health & Household (See Top 100 in Health & Household) #2 in Basal Thermometers
Customer Reviews: 4.2 4.2 out of 5 stars 6,876 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
Accurate Ovulation Cycle Monitoring – Track your cycle with iProven’s BBT thermometer each morning for reliable, 2-decimal readings needed for natural fertility planning. Track your cycle and figure out which days of the month are the most fertile.
Upgraded Design with Jumbo LCD Screen – With a basal thermometer for ovulation, the reading will take slightly longer than a regular oral thermometer due to the high degree of precision and accuracy. Our new & improved jumbo sized backlit screen is easy to read in the dark, so you won’t need to squint or strain your eyes in the morning.
60 Second Fast BBT Reading – The upgraded iProven algorithm delivers the fast and accurate readings in only 60 seconds. You can enter measurements manually into a paper fertility tracker chart, or download any ovulation tracker app and input the data yourself (independently, does not have Bluetooth app syncing)
30 Memory Recalls & Improved Features – Built-in memory recall of the last 30 readings is perfect for when you fall back asleep or forget to write the temperature down. Small waterproof tip is rigid for enhanced precision with less chance of deviation. The gentle confirmation sound beeps clearly. Hold the button to easily switch between °F/°C
100 Day / 100% Replacement Guarantee – Every order is backed by our confidence guarantee and 100% replacement policy during the first 100 days. Our dedicated Customer Care team is ready to serve and resolve any question or issue you may have. Discover why so many new moms and moms-to-be are so glad they chose iProven!
mom5kids –
Works great and if not warranty/service is great
I have bought this 2 times. The first one lasted 3 years, and maybe it would have gone longer if I hadn’t lost the replacement battery – but alas I bought a new one instead. The new one worked almost identically for just over 3 months, and then started acting up. Obviously amazon return was out, and the manufacturer says 100 days full refund, but I was about a week over that when it quit. Given it also has a 2 yr warranty and I had used the other one for 3 yrs, I emailed the manufacturer and they quickly got back to me. They suggested a trouble shoot and offered id it didnt work they’d mail me a new one. The troubleshoot didn’t work. After letting them know they immediately sent me a replacement without any struggle. I am impressed. So while my 2nd one did have issues, I give this 5 stars for history and a company standing by their warranty. The thermometer measures fast and accurately. The Last feature is nice.
Donna C –
Easy to use, great customer service
I was able to try both thermometers, so here’s my feedback that will hopefully be useful for the next person. I originally ordered the thin thermometer but there was an issue so then I tried the one with the bigger screen. If I had to choose between the two, I would prefer the thin thermometer.The thin thermometer is your regular, basic bbt thermometer. To use, you turn it on, it beeps, then stick it under your tongue, all the way to the back (on either the right or left side), when you first wake up in the morning. It’s best to have at least 4 hours of uninterrupted sleep for the best accuracy. Then it beeps twice, and then you can remove it from your mouth. You would then log your temp and the time on your bbt chart. If you wake up and it’s still dark, you’ll need to use a light source like the light from your phone screen to see the numbers. You can also just read your temp later on in the day when you’re more awake because the thermometer remembers your last reading, but be sure to note the time that you took your temp.The bigger screen thermometer is more for someone who prefers to read bigger numbers with a backlight. You won’t need a light source to see the numbers because it’s already built in. The beeping sound is also louder. I wake up early when it’s still dark so I did find the backlight blinding and the beep startling when I’m still groggy from waking up first thing in the morning. To resolve the light issue, I just flip the thermometer down. I haven’t found a fix around the louder beep yet. Hope this helps!
Sayani D. –
UPDATED: GO FOR THE EXPENSIVE ONE, TOP NOTCH CUSTOMER SERVICE
I ordered the smaller one a few weeks back. That was really not worth it. Very convenient to use. So I posted a review according to my experience and the team reached out to me promptly. They not only refunded the one I bought, but ordered the bigger one for me free of cost. And let me tell you, the new one is amazing! It is very accurate, very easy to use and looks sturdy. I cannot tell you enough about the product. The reading takes about a minute, but is stored for future. Decent size screen and backlighting make it very easy to read everything. It’s worth every penny. A must try!
Heather J Thomas –
Best customer service/upgrade to large display thermometer
I had originally ordered the smaller version of this thermometer but wasn’t satisfied with the length of time it took to show the results. It would also shut off before it reached temp.I reached out to the company directly and have never had such a good experience with a customer service department.They went above and beyond. They sent me the upgraded thermometer model with the larger display and quicker read.If you are thinking of getting a thermometer do yourself a favor and get the upgraded one for a few dollars more. I was afraid the beep would be too loud but it’s not and doesn’t disturb my husband when I use it in bed.
Vanessa molina –
Awesome thermometer
I ordered this thermometer and it works great! Something did happen to it not sure what, but I had reached out to customer service and they took care of me right away and sent me another one. You are in good hands with them.
Sally Sue –
Updated Review – Great Customer Service!
Update 11/7/24:This company was super great to work with. They saw my complaints, and sent me an upgraded version of their thermometer to try. It works great! It lights up, the numbers are large, and the button is easy to press. And it’s easy to look back later at the temperature that was taken to record later if I want to do it that way. The customer service was top notch, so I would order from them again now.Original review:I wouldn’t order this again. I didn’t realize that the temperature doesn’t light up. So since I’m using it for taking BBT first thing in the morning before getting up, it’s dark, and I can’t see the temperature. So then I have to come back later to actually record the temperature. I don’t like the way you have to hold the button down in order to get the prior reading instead of it just showing it like others usually do. Also, pushing the button is kind of difficult. I wish it was a bigger button. I also question the accuracy a bit since it measures way different than the other thermometer I had. I got it to have more precise measurement since my other one only measured to one decimal point, but this one will measure at least .5 degrees off from other other one.
The.Boat.Mom –
Hard to read in the dark + Slow to get a reading
Because you have to take your temperature when you first wake up, having the reading be backlit would have been nice, I have to grab my phone, turn the flashlight on so I can light up the thermometer so I can read it to log the temp. Also, when I first wake up, I usually need to go to the RR, and having to wait over a minute for this to give me a reading then fumbling with my flashlight to get the reading is a bit annoying, my bladder gets grumpy.Otherwise, it’s so inexpensive, and I think it’s accurate but I have nothing else to compare it to, that it’ll do. I wouldn’t use this long term, just using this short term.
Gus –
It works
It works well, just like your basic thermometer. Easy to use.
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B –
Great product. Fast delivery. Packaged well. Spare battery. Ability to save and read measurement later. F and C temp readings. .2 decimal places too.
Anuoluwapo David –
I love, love this product. Comes with its own batteries and extra. Its instructions are very clear and detailed. Definitely worth the purchase
Natalie –
Using for Basel temperature. It does take up to 60 seconds to get a reading as it’s more precise, so bear with it. It was set to F first then was able to change to °C. Saw good and bad reviews and the overall great rating so gave it a try and happy with it.
Christina Schamei –
Das Gerät hat an sich funktioniert zeigte jedoch keine Messung an sondern immer nur Hi