Comparison

kegg vs SmileReaderA Ovulation tracker

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

Head to head
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

About

SmileReaderA Ovulation tracker

This app helps users track ovulation and menstrual cycles to increase the chances of conception. It allows for image scanning of ovulation tests, logging of daily metrics like temperature and mood, and sharing information with a partner. The goal is to personalize family planning and identify peak fertility windows.

Highlights
  • Ovulation test image scanning
  • Pregnancy test logging
  • Personalized ovulation calendar
  • Daily log for BBT, mucus, mood, weight
  • Information sharing with partner
  • Fertility window estimation
Features
Read full description

SmileReader: Personalize your Family Planning We helps you get pregnant faster. The app helps you map everything out so you know when you have your best chances of conceiving. **App Features - Ovulation Tests: When you take pictures of our ovulation tests, you get to track the results directly inside this app. Map out your cycles and know exactly when you are ready to conceive. - Pregnancy Tests: We also provide pregnancy tests as well, which can be logged inside this app. - Ovulation Calendar: Track your personal period calendar so you know when you are at peak ovulation for the best chances of a pregnancy. - Image Scanning: Quickly scan the results of your SmileReader tests with the app. We then use technology to configure them into your own cycle. - Daily Log: You can also use the app to log in basal body temperature, changes in your cervical mucus, and even your mood and weight to increase the accuracy of prediction. - Information Sharing: Share information, dates, and ovulation info with your partner so they can be in-the-know as well. **How to Use 1. Enter your latest menstrual cycle. 2. Find out your estimated fertility window and the expected date of your next period. ** To detect more accurate fertile days, 1. Start ovulation testing on the date the app suggests. 2. Get reminders from the app to test on time. 3. Take a picture of a test strip, after dipping it in urine. 4. Keep testing until you identify your most fertile days. 5. Record signals of ovulation, moods and body temperature. 6. Monitor your pattern of period and ovulation. 7. Share your information with your partner. **Disclaimer The SmileReader app only works with test strips of PREGABLE. This app is merely designed to help you track your ovulation cycle for your best chances at pregnancy. The app is not a medical device and does not provide medical diagnosis. The index on the app is intended solely for tracking trends, not for providing specific clinical mIU/mL measurements. Please use this data for reference purposes only, and always consult a professional doctor for any medical decisions or health concerns.

Screenshots

kegg4 screens
SmileReaderA Ovulation tracker4 screens

Verdict

The call

The clearest difference is rating: kegg at 3.9 against SmileReaderA Ovulation tracker's 2.1. kegg also leads on review sentiment (75% vs 38%) and ratings volume (145 vs 21). SmileReaderA Ovulation tracker's advantage is monetization model (free vs paid). On price, update cadence, 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, 3.9 against 2.1. That said, the two scores are not equally well evidenced: kegg has 145 ratings behind it against 21, so its average is the more settled of the two. Written reviews point the same way: 75% of kegg's written reviews are positive against 38% of SmileReaderA Ovulation tracker's.

UpkeepUpdate frequency

kegg ships an update every 3 weeks, SmileReaderA Ovulation tracker monthly. Both last shipped on November 3, 2026.

Scorecard4 real differences · 6 level
kegg versus SmileReaderA Ovulation tracker: the parameters behind the verdict, then further details
ParameterkeggSmileReaderA Ovulation tracker
PriceFreeFree
Rating3.9 (145 ratings) — better2.1 (21 ratings)
Positive reviews75.2% of reviews — better37.5% of reviews
Number of ratings145 — better21
Update frequencyEvery 3 weeks — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.115.0 — better
Further details — not scored
Size52 MB132 MB
Age rating12+12+
DeveloperLady Technologies, Inc.Smilelab Corp.

Customer experience

kegg

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

SmileReaderA Ovulation tracker

All ratings21 ratings
Positive28.6%
Neutral0.0%
Negative71.4%
Written reviews8 reviews
Positive37.5%
Neutral0.0%
Negative62.5%

Bugs and 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

SmileReaderA Ovulation tracker

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

kegg

No in-app purchases

None

SmileReaderA Ovulation tracker

No in-app purchases

Questions

Is kegg free?
kegg is free to download, with no in-app purchases.
Is SmileReaderA Ovulation tracker free?
SmileReaderA Ovulation tracker is free to download, with no in-app purchases.
Which has better reviews, kegg or SmileReaderA Ovulation tracker?
kegg is rated higher. kegg averages 3.9 out of 5 from 145 ratings, while SmileReaderA Ovulation tracker averages 2.1 from 21 ratings.
Do kegg or SmileReaderA Ovulation tracker have ads?
Neither kegg nor SmileReaderA Ovulation tracker shows ads.
Which is updated more often, kegg or SmileReaderA Ovulation tracker?
kegg ships an update every 3 weeks, and SmileReaderA Ovulation tracker monthly. Most recently, kegg was updated on November 3, 2026 and SmileReaderA Ovulation tracker on November 3, 2026.

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