Rated 4.5 out of 5 stars
353 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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Order by 1pm PST (Business days)

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 353 reviews
Total 5 star reviews: 263 Total 4 star reviews: 41 Total 3 star reviews: 29 Total 2 star reviews: 9 Total 1 star reviews: 11
86%would recommend this product
353 reviews
  • 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.

  • G
    Verified Reviewer
    Rated 5 out of 5 stars
    It worked!

    I have a longer cycle so the typical apps had a hard time tracking my fertile days but using Kegg allowed me to find the window within a few months and am now pregnant!

  • L
    Verified Reviewer
    Rated 5 out of 5 stars
    Total game changer!

    My husband and I had our first pregnancy end in a miscarriage. That pregnancy took a while to happen - I NEVER had luck with tracking peak ovulation. It was like the OPK tests would say my levels were not high enough to be considered an ovulation. I was so discouraged on starting the process over and then I saw an ad for Kegg. I was unsure at first because of the cost, but the 12 month guarantee makes it a no brainer. Within the first cycle of using Kegg, I became pregnant with our rainbow baby. He's currently 2 days overdue and I can't wait for our little Kegglett to join us on the outside! To anyone on the fence on whether to purchase this - take the leap!

  • S
    Verified Reviewer
    Rated 5 out of 5 stars
    Surprised it worked!

    I had a multiple year fertility journey including IUI and egg retrieval with no diagnosed / explainable reason for infertility. I just had my son thanks to Kegg and a few months of fertility tracking

  • M
    Verified Reviewer
    Rated 5 out of 5 stars
    Great product! Insight information

    I used Kegg to track my ovalution dates. Later after three cycles, I check my ovulation using test strips dying predict dates. My ovulation is a little difficult to track, since my cycle is longer for about 36 days. The test stripes confirmed Kegg ovulation prediction and I got pregnant in the 4th month that I started to use Kegg. Thank you Kegg, and good luck to everyone trying !

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