The modern way to track your cycle

With Fertile Window and Ovulation Day Predictions Ahead of Time

iFertracker – Smart Fertility Tracker

4.56 out of 5



Category: BBT Monitor


We know how much you care about understanding your reproductive health, especially when it comes to actually getting pregnant. Whether you’re TTC or simply looking to track your cycle with greater precision, iFertracker can help.

Our device continuously monitors body temperature overnight to establish true Basal Body Temperature, which has been found to occur prior to awaking! Moreover, the device pairs with the iFertracker app to provide accurate predictions ahead of time for both your fertile window and ovulation day. Data syncs via Bluetooth and the app automatically converts it into an easy-to-understand BBT chart. It can be easily and comfortably worn under the arm overnight and our advanced algorithm filters out any noise, providing you with unrivaled convenience and accuracy.

No more worrying about waking up in the middle of the night or not moving a muscle in the mornings so you can get an accurate temp! Stay in bed a little longer. Go get that glass of water at 3am. Snuggle up to your significant other before work. FINALLY, you can sleep in without worrying about ruining your BBT. Use the iFertracker to see what conceiving with ease really means.

What comes in the box?

  • iFertracker wearable thermometer (tested safe, battery-powered)
  • 150 double-sided adhesive patches,
  • (2) CR2025 batteries,
  • (1) battery tool,
  • intuitive user manual

Shipping & Handling:

  • We ship via USPS Priority Mail: 1-3 days
  • Orders placed before 3pm will be fulfilled the same day, otherwise they will be sent out first thing the following morning

Additional information

Weight 8 oz
Dimensions 160.02 x 93.98 x 40.64 mm


9 reviews for iFertracker – Smart Fertility Tracker

  1. Rated 5 out of 5
    5 out of 5

    Helped me get pregnant after only two cycles, so I’m happy with it! No question the device was extremely accurate and the app was easy enough. Was skeptical about the disposable patches because I have sensitive skin, but they ended up being no issue at all – overall definitely recommend for anyone TTC!

  2. Rated 5 out of 5
    5 out of 5

    This device is so much more convenient than taking my oral BBT…the iFertracker is SO accurate and comfortable and the app is easy to use. Already looking forward to using this for my next cycle!

  3. Rated 5 out of 5
    5 out of 5

    My cycle was off due to multiple miscarriages. This device helped me pinpoint my ovulation day (CD22!) and get pregnant after a few months of wearing. I quickly ran out of patches and wouldn’t pay so much for more, so I just used wearable fashion tape and it worked great. I found sometimes the battery says it is out just a few days after changing it, but if I take it out and put it back in, it “resets” and lasts for weeks. I have shared the device with a friend and sister. We are 2/3 on getting pregnant!

  4. Rated 4 out of 5
    4 out of 5

    Easy to use and gets an accurate temp…just having a hard time getting used to the app but I’m sure this will come in time. So far no device or battery issues. Overall I’m happy with my purchase

  5. Rated 4 out of 5
    4 out of 5

    after three months of using this product on a daily basis I can pretty confidently say its REALLY accurate. Unlike what I’ve read from most other users on Amazon or their site I’m using it just to track my cycle/ as birth control. i hate hormonal birth control because of the side effects i was getting over the past couple years and this has been a god-send. Everyone who i showed it to seemed to question the comfort right away (under the arm does seem pretty clunky) but for me it wasn’t even noticeable after wearing it for the first night. Its more work than just taking the pill but the bluetooth sync makes it easy and app offers way more insight than just period tracking. Definitely worth the money if you’re looking to ditch the pill- i docked a star for the patches, i just wish the packaging came with more since i’m using it so regularly /:

  6. Rated 4 out of 5
    4 out of 5

    Works good so far I am 1 month in to using the ifertracker. Just waiting for a BFP, hope to update review within the next few uses

  7. Rated 5 out of 5
    5 out of 5

    Finally realized that with all the money I was spending on OPKs I might as well put that money to the iFertracker and I am happy I did because this device doesnt just go dead like the others and it predicts ovulation beforehand so i know the entire fertile window ahead of time which is awesome

  8. Rated 5 out of 5
    5 out of 5

    Had been TTC for 2 years and it helped me get pregnant after only 11 weeks. Thanks! Reading up on their FAQ I saw that it’s good to use this while pregnant to help with early prediction of miscarriage. Knowing how accurate it was while I was TTC, I’m definitely using throughout pregnancy too!

  9. Rated 4 out of 5
    4 out of 5

    I really like this product! I’m used to a different cycle tracking app, so this has been kind of hard to adjust to. I know you can integrate the device’s data with other cycle tracking apps (apple health enabled or something??), but I feel like it’s easier to have everything in one place (the iFertracker app). I’ve had some issues where I couldn’t get the device to turn on at night, and it turns out this was just a battery issue. I’m pretty sure the battery was too cold for use, so I warmed it up in my hands, put it back in the device, and it worked fine. Be aware of this when using the device!!

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