Rated 4.5 out of 5 stars
359 Reviews

kegg fertility tracker and kegel ball

kegg® is a medical-grade fertility tracking device that gives you accurate and personalized fertility tracking through cervical fluid in just 2 minutes a day.

Gain unique insights into your fertility. See your full fertile window with kegg!

One time purchase; no further cost for use. No refills, no subscription.

Free access to an online private community, where kegg users share charts, success stories, tips and tricks. Plus user support specialists answering questions and providing kegg chart insights.

Most women get pregnant from intercourse that did NOT occur on the day of the ovulation! kegg gives you the confidence that you will not miss the crucial first days of the fertile window.

Sale price$259 Regular price$269
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12 month Pregnancy Guarantee

If you are not pregnant within 12 months, you get 100% of money back.

One time purchase, no additional costs

FSA/HSA Qualified​

FDA registered​

Physician endorsed

1-year warranty​


Easily fits into your busy routine in just two minutes a day and no need to wear it overnight.

Backed by science

Utilizes decades of research on cervical fluid and electrolytes, combined with precise cervical fluid sensing technology for accurate tracking of peak fertility

Better timing

Gone are the days of missing the crucial part of your fertile window. Forget the hassle of costly OPK sticks and LH strips.

Personalized data

Predictions adjust each cycle to your body's uniqueness kegg displays results instantly on a FREE kegg app, so nothing is left up to chance.


Optionally doubles as a kegel ball to support your pelvic floor exercises. Just a few minutes every day!


20,000+ couples have used kegg to conceive


More accurate than BBT.

Clinical evidence supports that kegg readings can more accurately determine fertile window than basal body temperature. With kegg, you can also detect your fertile window and unique cycle trends earlier than when testing with ovulation predictor kits (OPKs).

Science behind kegg


Our customer support is available Monday to Friday: 8am-8:30pm.Average answer time: 24h

Product Reviews

See what others are saying about this product

Rated 4.5 out of 5 stars
Based on 359 reviews
Total 5 star reviews: 267 Total 4 star reviews: 42 Total 3 star reviews: 29 Total 2 star reviews: 9 Total 1 star reviews: 12
86%would recommend this product
359 reviews
  • S
    Rated 5 out of 5 stars
    Pregnant after 1st Cycle Using Kegg

    My cycle is irregular, and on my first month TTC (prior to using Kegg), I received false positive LH tests that led me to believe I was ovulating 1-2 weeks before I did. During my first month using Kegg, I ended up having a shorter than normal cycle. I was advised by a Kegg associate to treat every valley in my trend line as a potential fertility window. On days 10-12 I started noticing this valley, and on day 13 a big spike in my line. This is ~1 week earlier than my "normal" cycle would indicate I would oculate. We used these as signals, and ended up pregnant! We tested positive at 3.5 weeks and confirmed it at the doctor that day.

  • LH
    Leanna H.
    Verified Reviewer
    Rated 5 out of 5 stars
    Struggling with irregular cycles - kegg helped me get pregnant!

    I’ve been dealing with irregular cycles since coming off of birth control in January 2023. By the time my husband and I wanted to start trying to conceive in November of 2023, I was only getting my period every 3 months or so. I bought kegg on a whim, hoping that it would help me feel like I was making progress in our journey to conception, even without getting my period or a positive ovulation test. My doctor diagnosed me with hypo-ovulation after trying to conceive for 6 months without seeing a positive ovulation test. We were set to do lab work the next time I got my period again and potentially start with IUIs. I had been using kegg everyday since December 2023 and noticed a dip in my temperature and told my husband we should try, not confident that anything would come from it. 6 weeks later and I had been getting positive ovulation tests for the first time ever, 7 days in a row. I ended up taking multiple pregnancy tests that confirmed I was pregnant. My husband and I were shocked and are currently 14 weeks pregnant with our little boy. Never did I think I would be able to conceive naturally, without some type of intervention from my doctor. I am forever grateful to Kegg for helping my husband and I start our little family sooner than we ever thought we would. If you have irregular cycles and have considered purchasing, I highly recommend giving it a try.

  • B
    Rated 5 out of 5 stars
    Pregnant after 1 cycle on kegg!

    We had tried for 3 cycles but our first cycle using kegg we are pregnant!

  • CS
    C. S.
    Rated 5 out of 5 stars
    So helpful

    My husband and I tried for 4 months for our second child after getting my IUD removed. We were using LH strips and an app to monitor my cycle and we weren’t successful. We had no trouble the first time getting pregnant I decided to try kegg to get more information on my cycle. After one month of using kegg we were successful and are currently pregnant with baby #2. So glad we used this option !

  • RB Profile picture for Rachel B.google logo
    Rachel B.
    Verified Reviewer
    Rated 5 out of 5 stars
    Pregnant after 3 months

    I was pregnant after just three months of using Kegg. Unfortunately, I miscarried that pregnancy, but it gives me great comfort I can use Kegg to get pregnant again.

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