Comparison

iFertracker vs kegg

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

iFertracker

This app helps users track their menstrual cycles and identify their fertile window for conception. It uses basal body temperature data to predict ovulation and suggest optimal times for intercourse. Users can visualize their cycle data and share BBT charts for medical consultation.

Highlights
  • Ovulation prediction
  • Fertile window identification
  • Menstrual cycle tracking
  • Basal body temperature charting
  • Health App integration
  • Data visualization
Features
Read full description

iFertracker, a smart basal-body-temperature (BBT) thermometer developed by Raiing Medical Company, is to track the best time to try and conceive. Connecting with the iFertracker App, iFertracker can easily tell you the phases of your menstrual cycle, fertile window, and help you arrange intercourse accordingly. Key functions are: [Find the right time] - Wear the iFertracker overnight, you will get precise basal body temperature for ovulation prediction and the best time for intercourse. [Understand your menstrual cycles] - Menstrual cycles are illustrated in a visual and intuitive way based on consecutive and precise data, getting you ready for the approaching period. [BBT chart] - BBT chart is available for further medical consulting and professional diagnosis. iFertracker has integrated with the Health App and you can sync your basal body temperature and menstruation data to the Health app (requires iOS8). Raiing Medical is a data driven, healthcare service company, dedicated to reproductive health.

About

kegg

This medical-grade device offers accurate fertility tracking by analyzing cervical fluid in just two minutes daily. It helps identify fertile windows for conception and provides insights into ovulation, while also offering guided pelvic floor exercises for health and recovery.

Highlights
  • Medical-grade fertility tracking
  • Cervical fluid analysis
  • Fertile window identification
  • Ovulation probability insights
  • Guided kegel exercises
  • Pelvic floor health optimization
Features
Read full description

Meet kegg® - a medical-grade fertility tracking device that gives you accurate and personalized fertility tracking through cervical fluid in just 2 minutes a day. Clinically validated fertility monitor Constructed of medical-grade silicone, kegg uses advanced sensing technology to detect the dynamic shifts in your fertility. Track Your Key Fertility Metric Maximize your chances of pregnancy by accurately detecting fertile versus non fertile cervical mucus so you can time your efforts with precision. Daily Fertility Insights Your Fertility and Cervical Mucus Score helps you identify your most fertile days, while the ovulation probability helps you see when ovulation may occur. Guided Kegel Exercises Optimize your pelvic floor health for labor and postpartum recovery using kegg’s kegel routines. CONNECT WITH KEGG: + Web:http://www.kegg.tech/ + Facebook: @kegg.tech + Instagram: @kegg_tech + Private community: https://www.facebook.com/groups/keggcommunity/ GET HELP: If you have any questions about the kegg device or the kegg app, read our FAQ at https://kegg.tech/faq or message us at www.kegg.tech/support

Screenshots

iFertracker3 screens
kegg4 screens

Verdict

The call

The clearest difference is rating: kegg at 4.0 against iFertracker's 3.1. kegg also leads on review sentiment (75% vs 40%) and update cadence (every 3 weeks vs every 2 months). iFertracker's advantage is monetization model (free vs paid) and iOS requirement (10.0 vs 15.1). On price, ratings volume, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

kegg holds the better App Store score, 4.0 against 3.1. Both are backed by a comparable volume of ratings — 55 and 140 respectively. Written reviews point the same way: 40% of iFertracker's written reviews are positive against 75% of kegg's.

UpkeepUpdate frequency

iFertracker ships an update every 2 months, kegg every 3 weeks. The most recent releases landed on October 23, 2026 and October 20, 2026 respectively.

Scorecard5 real differences · 5 level
iFertracker versus kegg: the parameters behind the verdict, then further details
ParameteriFertrackerkegg
PriceFreeFree
Rating3.1 (55 ratings)4.0 (140 ratings) — better
Positive reviews40.0% of reviews75.2% of reviews — better
Number of ratings55140 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS10.0 — better15.1
Further details — not scored
Size47 MB52 MB
Age rating17+12+
DeveloperRaiing Medical CompanyLady Technologies, Inc.

Customer experience

iFertracker

All ratings55 ratings
Positive47.3%
Neutral7.3%
Negative45.5%
Written reviews45 reviews
Positive40.0%
Neutral8.9%
Negative51.1%

kegg

All ratings140 ratings
Positive72.9%
Neutral2.9%
Negative24.3%
Written reviews117 reviews
Positive75.2%
Neutral2.6%
Negative22.2%

Bugs and requests

iFertracker

Not enough reviews yet to summarise bugs or requests.

kegg

Reported bugs

4 issues
  • App freezes and crashes frequently
  • Syncing issues between device and app
  • Fertility predictions do not align with other methods
  • Constant logout prompts disrupt user experience

Requested features

4 requests
  • Add ability to track period and symptoms
  • Improve app design and user experience
  • Provide more detailed data analysis and insights
  • Integrate with other fertility tracking apps

In-app purchases

None

iFertracker

No in-app purchases

None

kegg

No in-app purchases

Questions

Is iFertracker free?
iFertracker is free to download, with no in-app purchases.
Is kegg free?
kegg is free to download, with no in-app purchases.
Which has better reviews, iFertracker or kegg?
kegg is rated higher. iFertracker averages 3.1 out of 5 from 55 ratings, while kegg averages 4.0 from 140 ratings.
Do iFertracker or kegg have ads?
Neither iFertracker nor kegg shows ads.
Which is updated more often, iFertracker or kegg?
iFertracker ships an update every 2 months, and kegg every 3 weeks. Most recently, iFertracker was updated on October 23, 2026 and kegg on October 20, 2026.

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