Digital Basal Body Thermometer, 1/100th Degree High Precision, Quick 60-Sec Reading, Memory Recall, Accurate BBT Thermometer for Natural Ovulation Tracking by iProven | Memory Recall, Fast & Accurate BBT Thermometer for Natural Ovulation Tracking by iProven

Works well and takes accurate temperature readings! It takes awhile to read temps. It is small and the screen/font is on the small side. Overall, it works well and does what it's supposed to!

The thermometer I received didn't work, and the included replacement battery didn't fix it. I reached out to the company's customer service directly via email, and they replaced it for me at no charge. I didn't even have to send the broken one back! The new one works perfectly, is easy to use and easy to read. Highly recommend this company!

Good product overall. Unfortunately, stopped working after ~3 months of typical daily use. Customer service was top tier though, quickly sent me a replacement, and followed up with me throughout the process!! Hopefully this one lasts longer than my first!

This basal thermometer exceeded any technical and durability expectations I could have had. It offers a quality and performance that seem unbelievable for such an affordable price range.Precision and Speed for Biohacking: The $1/100th of a degree resolution (two decimals) is highly precise, which is essential for rigorous basal body temperature tracking and circadian rhythm optimization. The 60-second reading is incredibly fast and consistent, without erratic variations between consecutive takes.Absolute Endurance Test: What 100% convinced me of its build quality is that it accidentally went into the laundry and endured a full washing machine cycle. To my surprise, the thermometer came out intact, turned on perfectly, and retained its calibration and mathematical precision. The insulation seals are top-tier.Value for Money: It does too many things right for such a low cost. The display is clear, and the built-in memory makes daily logging hassle-free.

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.

Update: iProven reached out to me based on this review and offered me a full refund or another device hoping I’d give them another chance. I appreciate the follow up and outreach. I already purchased a different thermometer or else I probably would have done this. For that reason, I am adding stars. This thermometer worked great for one month. Don’t buy. I went cheap with this purchase because I wasn’t sure I would stick with tracking my temps. I simply should have started with a better thermometer. I read the reviews on how loud it is - this is true. I tried everything from covering it up with my hand or the plastic tube it comes in to wrapping a towel around it, but it still sounded like a fire alarm going off. I read the reviews complaining about how hard it is to read with no backlight - that was more and more annoying as time went on or what time my alarm went off, but something I could deal with. Finally, I read the reviews about how it broke so quickly - and I am one of those. I bought this product less than two months ago and didn’t use it every day and it still is broken — already. What annoys me the most though is it didn’t break and just stop giving temps or give wildly inaccurate temps, for a week it gave me 97.2X, which could have been accurate. However, I started having doubts due to using other tracking methods, so I double-checked with another thermometer and the readings were .6 off. According to it, I have the same temp when I first wake up as I do two hours after I have been awake, showered and heading off to work. Would have been nice to know that it wasn’t actually working. Save yourself the frustration and the wondering and just buy a better, different thermometer.

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!

Updated review: customer service for this product is top notch. They really wanted me to be satisfied with a thermometer and solved my issue. The second thermometer listed does have a light (with the larger screen). I got it 4 stars because of two reasons: the light stays on only briefly so you have to look kinda quickly, and this could be user error but there have been a few times (with each thermometer) that I thought it was ready my temperature but after over a minute I take it out and it’s just off. All in all, it’s precise to 2 digits and works for what I need! Oh, one more thing, the beep has woken my husband, so it’s not super quiet. Not a problem though since he’s usually awake before me anyways. And I like the case it comes in! Original review: I mean…I works…but heads up - there is no LED light. I know it’s supposed to be able to recall your last recording later but honestly it prefer one that has a light for easy reading without turning the room light on

كيف اعرف درجة الحرارة بالفهرنهايت حتى البرنامج مو راضي يقبلها ولكن للاسف بحثت كثير في اني القى ميزان جيد لذا الموضوع ومالقيت

Great for what I need it for - beeping seems loud first thing in the morning but its great to get temperatures to 2 decimal placess

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.

Parfait pour la sympto, dommage qu’il n’y ai pas de rétro éclairage mais j’ai pris l’habitude d’emporter mon thermomètre dans la salle de bain en quittant mon lit. Le bip est discret, ne dérange pas mon conjoint.

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