Comparison

Tempdrop vs kegg

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

Head to head
About

Tempdrop

This app works with a specialized thermometer to track subtle overnight temperature changes. It helps identify hormonal fluctuations throughout the menstrual cycle, pinpoint ovulation, and predict cycle phases. The data supports fertility awareness and cycle tracking.

Highlights
  • Basal body temperature tracking
  • Ovulation pinpointing
  • Menstrual cycle prediction
  • Hormonal fluctuation correlation
  • Fertility awareness support
Features
Read full description

The Tempdrop app is designed to complement the Tempdrop device - a personalized user-specific thermometer that captures minute temperature variations throughout the night to pinpoint the basal body temperature. Detected variations in temperature correlate with hormonal fluctuations throughout the menstrual cycle. When used with the Tempdrop device, this app can help users to pinpoint ovulation and effectively track and predict the varying phases of the cycle. Disclaimer: The Tempdrop sensor and app are intended as complementary instruments to enhance your ability to monitor your fertility and share health details. The app and its wearable sensor, in themselves, are not, nor are they intended to be, a fertility monitor, a substitute for contraception, or a birth control method. We recognize the need of some to use the data and information provided to support ongoing health and menstrual cycle tracking, however, it is important to note that this should NOT be used as a substitute for an in-presence qualified professional, medical analysis, advice, guidance, or treatment. We strongly advise seeking a qualified Fertility Awareness instructor or other self-teaching resources to learn a symptothermal method and support your fertility journey. The provided interpretations and prediction guidelines are not suitable for use with irregular cycles. Optimal performance is dependent on correct and consistent use. Individual usage, wearing, input, and circumstances can affect the data. The user is fully responsible for the individual data inputs. The Tempdrop Sensor is approved for use in the USA, and is registered in the FDA database under registration number 3016099071. The device is classified as "Device, Fertility Diagnostic, Proceptive”. A link to the terms of use - https://www.tempdrop.com/pages/tos A link to the privacy policy - https://www.tempdrop.com/pages/privacy-policy

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

Tempdrop4 screens
kegg4 screens

Verdict

The call

The clearest difference is review sentiment: kegg at 76% against Tempdrop's 38%. kegg also leads on in-app purchases (none vs 6) and update cadence (every 3 weeks vs every 2 months). Tempdrop's advantage is rating (4.2 vs 4.0) and ratings volume (705 vs 140). On price, ads, device support and iOS requirement 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. Tempdrop sells 6 in-app purchases, starting at $2.99 per month. kegg asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Tempdrop holds the better App Store score, 4.2 against 4.0. That said, the two scores are not equally well evidenced: Tempdrop has 705 ratings behind it against 140, so its average is the more settled of the two. Written reviews complicate that: 38% of Tempdrop's written reviews are positive against 76% of kegg's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Tempdrop ships an update every 2 months, kegg every 3 weeks. The most recent releases landed on September 23, 2026 and September 21, 2026 respectively.

Scorecard6 real differences · 4 level
Tempdrop versus kegg: the parameters behind the verdict, then further details
ParameterTempdropkegg
PriceFreeFree
Rating4.2 (705 ratings) — better4.0 (140 ratings)
Positive reviews38.2% of reviews76.1% of reviews — better
Number of ratings705 — better140
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size104 MB52 MB
Age rating12+12+
DeveloperTempdrop IncLady Technologies, Inc.

Customer experience

Tempdrop

All ratings705 ratings
Positive80.7%
Neutral6.1%
Negative13.2%
Written reviews165 reviews
Positive38.2%
Neutral18.8%
Negative43.0%

kegg

All ratings140 ratings
Positive72.9%
Neutral2.9%
Negative24.3%
Written reviews113 reviews
Positive76.1%
Neutral2.7%
Negative21.2%

User reviews

Tempdrop

From 705 App Store ratings

What we love

  • 🚀 Convenient and easy to use
  • 🚀 Accurate temperature tracking
  • 👍 Helpful for fertility awareness and family planning
  • 👍 Empowering for understanding one's body
  • 👍 Useful for tracking hormonal fluctuations

Room to improve

  • 🐛 Issues with app syncing and functionality
  • 🔍 Limited symptom and data tracking options
  • 💰 Expensive device and subscription model
  • 👎 Poor customer service and support
  • 👎 Unreliable hardware and short device lifespan

kegg

From 140 App Store ratings

What we love

  • 🚀 Easy to use
  • 💡 Provides insights into cycle
  • 👍 Helpful community support
  • 🚀 Convenient daily tracking
  • 🚀 Accurate fertility predictions

Room to improve

  • 🐛 Buggy app with poor navigation
  • 🐛 Inconsistent fertility predictions
  • 🐛 Difficult to interpret data
  • 🐛 Frequent login issues
  • 🐛 Notifications don't always work

Bugs and requests

Tempdrop

Reported bugs

4 issues
  • App crashes and freezes
  • Issues with syncing device data
  • Inaccurate cycle predictions and phase tracking
  • Temperature data changes over time

Requested features

5 requests
  • Improved sleep tracking capabilities
  • More customizable symptom and data tracking
  • Ability to manually confirm ovulation
  • Integration with other fertility/health apps
  • Support for irregular cycles and postpartum/breastfeeding phases

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

6 purchases

Tempdrop

Subscriptions6
  • Tempdrop Promo Premium monthly2 Months trial$2.991 Month
  • Tempdrop Premium monthly2 Months trial$6.001 Month
  • Tempdrop Promo Premium quarterly2 Months trial$7.993 Months
Show 3 more
  • Tempdrop Premium quarterly2 Months trial$15.003 Months
  • Tempdrop Promo Premium yearly2 Months trial$24.991 Year
  • Tempdrop Premium yearly*2 Months trial$48.001 Year
None

kegg

No in-app purchases

Questions

Is Tempdrop free?
Tempdrop is free to download, with in-app purchases available.
Is kegg free?
kegg is free to download, with no in-app purchases.
Which has better reviews, Tempdrop or kegg?
Tempdrop is rated higher. Tempdrop averages 4.2 out of 5 from 705 ratings, while kegg averages 4.0 from 140 ratings.
Do Tempdrop or kegg have ads?
Neither Tempdrop nor kegg shows ads.
Which is updated more often, Tempdrop or kegg?
Tempdrop ships an update every 2 months, and kegg every 3 weeks. Most recently, Tempdrop was updated on September 23, 2026 and kegg on September 21, 2026.

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