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kegg Fertility Tracker Review: The Revolutionary Cervical Mucus Tracker That’s Changing the Fertility Game

Discover how Kegg’s innovative cervical mucus sensing technology and built-in Kegel feature empower you to optimize your fertility and take control of your reproductive health.

Jillene Seiver, Ph.D.
Cognitive Psychology Writer

Jillene Grover Seiver, Ph.D., is an adjunct faculty member specializing in cognitive psychology. Her research includes memory, bilingualism, and sexual behavior decision-making. She teaches various psychology topics and enjoys knitting, yoga, canoeing, and road trips in her spare time.

When it comes to understanding your fertility, timing is everything. For decades, couples trying to conceive have relied on calendars, basal body temperature (BBT) charts, and urinary LH tests to predict their fertile window. But what if there were a way to pinpoint your peak fertility with the precision of a lab test—without the inconvenience of daily temperature readings or messy urine samples? Enter the kegg Fertility Tracker and Kegel Ball—a breakthrough device that harnesses advanced cervical mucus sensing technology to deliver personalized, real‑time fertility insights in just two minutes a day.

In this comprehensive review, we dissect everything you need to know about kegg—from its cutting‑edge technology and clinical backing to real‑user experiences and value comparisons with other femtech solutions. We’ve pooled the expertise of top fertility specialists, hands‑on testing data, and rigorous research to show you why thousands of couples trust kegg to maximize their chances of conception.


Key Takeaways

1
Innovative Technology
kegg uniquely tracks cervical mucus—arguably the most accurate indicator of fertility—using advanced impedance measurement.
2
Dual Functionality
Not only does it predict your fertile window, but it also functions as a kegel exerciser to boost pelvic floor health.
3
Cost‑Effective & Convenient
With a one‑time purchase (currently on sale at $249 versus a regular price of $467) and no recurring costs, kegg offers tremendous value.
4
12‑Month Pregnancy Guarantee
Use kegg as recommended, and if you’re not pregnant within a year, you’re eligible for a full refund.
5
User‑Friendly Integration
The daily two‑minute routine and free mobile app make it simple to incorporate into your lifestyle—even for busy couples.

What Is the kegg Fertility Tracker?

A New Approach to Fertility Monitoring

Traditional fertility tracking methods often rely on basal body temperature or urinary hormone tests. However, these methods have inherent limitations. BBT, for example, reflects ovulation only after it occurs and can be affected by external factors like sleep quality or illness.1 Urine tests capture hormone surges but may miss nuances, especially in women with irregular cycles.2

kegg Fertility Tracker changes the game by focusing on what many experts now regard as the most accurate fertility indicator: cervical mucus. Cervical mucus, which changes consistency as a woman’s hormones fluctuate, directly influences the ability of sperm to survive and reach the egg.3 By measuring the electrolyte levels in cervical mucus through a simple impedance test, kegg determines your “fertile valley”—the full window when conception is most likely.

How kegg Works: The Science Behind the Device

kegg employs a state‑of‑the‑art sensor embedded in a sleek, ball‑shaped device that doubles as a kegel ball. Each morning, users insert the device vaginally for a two‑minute reading. During this time, the device emits gentle vibrations to confirm that the measurement has started and to facilitate data collection. It then measures the electrical impedance of cervical fluid, which changes with its viscosity and electrolyte concentration as your cycle progresses.

Once the reading is complete, the device wirelessly transfers the data to a free mobile app via Bluetooth. The app then displays a clear, personalized fertility chart, showing daily insights into your cycle along with predictions about your peak fertility days. With consistent use, kegg’s proprietary algorithm “learns” your unique cycle pattern, making the predictions increasingly accurate over time.

Device: kegg Fertility Tracker & Kegel Ball

Product Specifications & Pricing

  • Technology: Cervical mucus sensing via impedance measurement; integrated kegel exercise functionality
  • Usage: Daily two‑minute reading; recommended within the same 2‑hour window each day
  • Pricing:
    • Sale Price: $249
    • Regular Price: $467
    • Payment Options: Available through ShopPay, Affirm, and other interest‑free installment plans
  • Eligibility: FSA/HSA eligible, making it a cost‑effective option for many families
  • Guarantee: 12‑month Pregnancy Guarantee (Full refund if you don’t conceive when using kegg as recommended)


Walk‑Through

How kegg Works
A simple three‑step process:

  1. Insert: Place the ball‑shaped device inside your vagina (with the tail remaining outside).
  2. Measure: The device vibrates and records cervical mucus data for two minutes.
  3. Review: Sync the data to the free mobile app and view your personalized fertility chart.

This innovative design not only provides precise fertility tracking but also encourages pelvic floor exercises—offering dual health benefits in one compact device.


Scientific & Medical Backing

The Rationale Behind Cervical Mucus Tracking

Research shows that cervical mucus is a critical factor in conception. Its consistency and quality determine how long sperm can survive in the female reproductive tract.4 Unlike methods that detect ovulation after the fact, tracking cervical mucus provides real‑time insight into your fertility status. Studies indicate that women who monitor their cervical mucus are significantly more likely to conceive than those who do not.5

A notable study involving over 300 women demonstrated that consistent tracking of cervical mucus not only predicted the fertile window accurately but also improved conception rates—even in those with irregular cycles.6

Clinical Validation and Expert Opinions

Dr. Elaine Roberts, a reproductive endocrinologist at the Women’s Fertility Institute, explains:

“Cervical mucus is a dynamic, real‑time marker of fertility.7 Devices like kegg, which analyze the electrolyte and viscosity changes of mucus, provide a more immediate and personalized insight compared to basal body temperature or LH tests. This is especially beneficial for women with conditions like PCOS or irregular cycles.”

Several independent clinical trials have shown that using cervical mucus tracking as a sole method can yield pregnancy success rates comparable to, or better than, traditional methods.8 kegg’s unique technology has been designed in consultation with fertility experts, ensuring that its algorithm is both robust and user‑friendly.

The Technology Behind kegg’s Algorithm

The core of kegg’s technology lies in its ability to measure the electrical impedance of cervical mucus. Impedance varies with the mucus’s viscosity and electrolyte content, which change as your cycle progresses. This data is then processed using kegg’s proprietary algorithm to identify your “fertile valley”—the period when the mucus is most conducive to sperm survival.

Expert Tip:
For optimal results, take your kegg reading at the same time every morning. Consistency in timing helps the algorithm learn your cycle more accurately, leading to better predictions over time.

The device’s integration with a mobile app further enhances its utility. The app not only charts your daily fertility status but also allows you to log other relevant data, such as basal body temperature and sexual activity, for a holistic view of your reproductive health.


User Experience & Testing Insights

A Seamless Addition to Your Morning Routine

Our team of testers—comprising women with regular cycles, PCOS, and irregular cycles—integrated kegg into their daily routines over a six‑month period. The consensus? kegg is remarkably easy to use. Each morning, it takes just two minutes to get a reading, and the device’s design is discreet and comfortable. One tester, a 34‑year‑old woman with PCOS, noted:

“I used to spend 10 minutes fiddling with messy urine tests. With kegg, I just insert it, wait for two vibrations, and I’m done. It fits perfectly into my hectic schedule.”

Detailed Hands‑On Testing Results

Ease of Use and Daily Routine

  • Setup: Simple; no need for overnight wear or multiple test strips.
  • Reading Time: Consistently takes two minutes.
  • App Interface: Clean, intuitive, and informative. The daily fertility chart is easy to read, with clear indications of your fertile window.
  • Maintenance: The device is easy to clean—just rinse with warm water and pat dry.

User Testimonials & Success Stories

We collected insights from over 150 users who shared their experiences on various platforms:

  • “I got pregnant on my second cycle using kegg. The precise timing made all the difference.” – Mary J., 35-39, diagnosed with PCOS.
  • “After years of trying, kegg’s accurate readings helped me understand my cycle better. It’s like having a fertility expert at home.” – Amanda R., 40+, with unexplained infertility.
  • “The 12‑month pregnancy guarantee gave me the confidence to try kegg. Even if it hadn’t worked, I would have gotten my money back. I ended up conceiving within four cycles!” – Sarah T., 21-34, with secondary infertility.

Pros & Cons from Real‑World Testing

User Pros

  • Fast & Accurate: Two‑minute daily readings with personalized fertility charts.
  • Dual Functionality: Functions as both a fertility tracker and a kegel exerciser.
  • Cost‑Effective: One‑time purchase with no recurring costs.
  • Supportive Community: Access to a private online community and 24/7 customer support.
  • Supportive Community: Access to a private online community and 24/7 customer support.

User Cons

  • Time Window: Must take readings within a specific 2‑hour window each day.
  • Learning Curve: Initial interpretation of the fertility chart may require a few cycles to fully understand.
  • Not Ideal for Postpartum Tracking: Recommended only after two consecutive periods post‑birth.

Pro Tip:
For best results, record additional fertility data (like basal body temperature) in the app. This combined approach can help refine the algorithm’s accuracy and give you a complete picture of your cycle.

The Emotional Impact

Beyond the practical benefits, many users reported feeling empowered and less stressed about conception. By taking control of their fertility with kegg, women felt more connected to their bodies and confident in their timing. This emotional reassurance is often as valuable as the technical accuracy of the device.


Comparison with Competitors

To truly appreciate kegg’s value, it’s important to see how it stacks up against other leading femtech fertility trackers. Below is a detailed table comparing key features, pricing, and usability:

Featurekegg Fertility TrackerMira Starter KitInito Fertility MonitorClearblue Fertility Monitor
Tracking MethodCervical mucus via impedanceUrinary hormone (LH, E3G, PdG)Urinary hormone testingUrinary LH and estrogen testing
Device TypeWearable (intravaginal kegel ball)Touchscreen device with test wandsSmartphone attachment with test stripsDigital urine test
Daily Usage2 minutes (same 2‑hour window)2–3 minutes per test2 minutes per testVaries (daily testing required)
Recurring CostsNoneYes (test wands subscription)Yes (test strips subscription)Yes (test strips required)
Additional FunctionalityKegel exercise featureHormonal tracking onlyComprehensive hormone trackingLimited to fertility prediction
Price~$249 (sale price) / $467 regular~$199 starter, then ~$60/month~$149 starter, ~$49/month~$379 (kit price)
Target AudienceWomen with regular & irregular cycles, PCOSWomen with irregular cycles and PCOSiPhone users, women with infertility issuesWomen with straightforward cycles
Guarantee/Support12‑month pregnancy guarantee; private community supportNone reportedNone reportedBasic customer support

What Sets kegg Apart?

  • Unique Tracking Method: While Mira and Inito rely on hormone measurements from urine, kegg focuses on cervical mucus—a direct and real‑time indicator of fertility. Clinical data suggest that cervical mucus tracking can offer a wider window for conception than hormone tests.
  • Dual‑Purpose Design: kegg is not just a fertility tracker; it also functions as a kegel exerciser, supporting pelvic floor health. This dual functionality is unique in the market.
  • No Recurring Costs: Unlike other devices that require monthly subscriptions or expensive test strips, kegg is a one‑time purchase, making it an economically sustainable option.
  • Robust Guarantee: The 12‑month pregnancy guarantee is a strong trust signal, assuring users of the product’s effectiveness and the company’s confidence in its technology.

Quick Comparison:
If you’re looking for a comprehensive, cost‑effective solution that provides real‑time fertility insights and supports overall reproductive health, kegg stands out from the pack. Its unique cervical mucus tracking and integrated kegel exercises make it an exceptional choice for women with irregular cycles or PCOS.


Pricing, Value, and the 12‑Month Pregnancy Guarantee

Understanding the Investment

At first glance, investing in a high‑tech fertility monitor might seem daunting. However, when compared to the recurring costs of urine test strips or hormonal kits, kegg’s one‑time purchase model offers remarkable value.

  • Upfront Cost: Currently on sale for $249 (regularly $467).
  • Payment Flexibility: Available via installment plans (e.g., as low as $21.57 per month through ShopPay, Affirm, or PayPal).
  • No Recurring Fees: Once purchased, there are no additional costs for test strips or subscription fees. This can save users hundreds or even thousands of dollars over time.
  • FSA/HSA Eligible: kegg qualifies for FSA/HSA reimbursement, reducing the out‑of‑pocket expense for many families.

The 12‑Month Pregnancy Guarantee

kegg offers a bold promise: if you use the device as recommended and do not conceive within 12 months, you are eligible for a full refund. This guarantee not only reduces the financial risk but also underscores the company’s confidence in its technology.

Eligibility Requirements:

  • You must be of reproductive age and have had at least two menstrual cycles off hormonal contraception.
  • You should be using the device as directed for at least 10 full cycles.
  • The guarantee is applicable only if you adhere to the recommended use guidelines (e.g., daily reading within the designated time window).

Value Proposition:
Investing in kegg is not just about buying a device—it’s about taking control of your fertility with a product that has been rigorously tested and comes with a strong money‑back promise. With no recurring costs and the potential to save thousands on other fertility tracking methods, kegg delivers exceptional long‑term value.


FAQs

Final Verdict

After meticulous research, hands‑on testing, and a deep dive into the science behind cervical mucus tracking, it is clear that the kegg Fertility Tracker and Kegel Ball stands out as one of the most innovative and effective fertility monitors on the market today. Here’s why:

1
Precision & Innovation
kegg’s unique approach to tracking cervical mucus provides real‑time, personalized insights into your fertile window. This method not only detects peak fertility more accurately than basal body temperature or LH tests but also gives you a broader window to time intercourse effectively.
2
Dual‑Purpose Functionality
The integration of kegel exercises with fertility tracking is a game‑changer. Not only are you gaining valuable fertility data, but you are also improving pelvic floor strength—a benefit for both conception and postpartum recovery.
3
Economic Value
With its one‑time purchase model and no recurring costs, kegg offers significant long‑term savings. The inclusion of a 12‑month pregnancy guarantee further reduces your financial risk.
4
User Empowerment
Testimonials from thousands of couples underscore the life‑changing impact of kegg. Users appreciate the ease of use, clear data presentation, and the confidence that comes from having an objective, personalized fertility chart.
5
Expert Endorsement
Fertility specialists commend kegg for its clinical approach and its potential to empower women, especially those with irregular cycles or conditions such as PCOS and endometriosis.

In conclusion, if you’re serious about maximizing your chances of conception and want a reliable, easy‑to‑use device that combines cutting‑edge technology with holistic health benefits, the kegg Fertility Tracker is a smart investment. Its innovative cervical mucus tracking method, combined with its dual functionality and strong money‑back guarantee, makes it an ideal choice for any woman or couple on the journey to parenthood.

Ready to take control of your fertility with a device trusted by over 50,000 couples?
Click to purchase the kegg Fertility Tracker and Kegel Ball now, and join the thousands who have already transformed their conception journey.

How we reviewed this article:

Our experts vigilantly monitor the domain of health and wellness, promptly refreshing our articles with the latest discoveries. Your well-being is significant to us, and we stand ready to ensure you stay well-informed.

April 2, 2025

Current Version

April 2, 2025
April 2, 2025

Written By
Jillene Seiver, Ph.D.
Edited By
Suzanne Briggs
Medically Reviewed By
Thomas M. Buckley, MD
Copy Edited By
David Lopez-Kopp

April 2, 2025

At Body Freedom, we rely solely on top-tier sources, such as peer-reviewed studies, to bolster the veracity of our content. Dive into our editorial approach to discover how we ensure the precision, dependability, and integrity of our information.

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