Comparison

Thermo vs CORE Thermal Sensor

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

Head to head
About

Thermo

Easily track family health by logging temperature changes and other vital signs. Create individual profiles to monitor each person's well-being over time with helpful charts and graphs. Set personalized reminders for consistent tracking and utilize voice input for added convenience.

Highlights
  • Family health tracking
  • Individual profiles
  • Temperature logging
  • Health dynamic graphs
  • Personalized reminders
  • Voice input
  • Apple Watch sync
Features
Read full description

• Take care of your family health marking temperature changes. • Create profiles for each family member and track a health state of them. • Useful graph allows you to watch health dynamic. HEALTH DATA • Record the daily temperature of each family member • Integration with the Health app CHARTS AND GRAPHS • Watch the graph of the temperature ups and downs for a day or a week • Check time to know exactly when the disease starts progressing PERSONALIZED REMINDERS • Set reminders to log your temperature, pulse, pressure, blood sugar, and insulin. • Customize reminder times and frequencies to fit your schedule and ensure consistent health tracking. VOICE INPUT WITH AI • Record your voice for more convenience • Adapted for multiple languages APPLE WATCH SYNCHRONIZATION • On the main screen you can choose our app in settings - that enables you to launch the app and see the last measurement quickly. • Also you can check the history with your watch. PLEASE NOTE: Some features are available with a PAID subscription only: weekly and monthly statistics, data export to PDF, and creation of multiple profiles. The FREE version includes tracking of health metrics, managing one profile, and daily statistics. ATTENTION: before you subscribe please read:
 Privacy Policy: https://daily-discovers.com/privacy Terms of Use: https://daily-discovers.com/tos

About

CORE Thermal Sensor

This app continuously monitors your core body temperature and thermal strain, providing critical data for heat training and optimal race performance. It helps athletes of all levels improve their training and achieve better results.

Highlights
  • Continuous core body temperature monitoring
  • Real-time Heat Strain Index
  • Heat Zones for training and racing
  • Heat Training Load and Adaptation Score
  • Passive heat training tracking
  • Data trends and historical analysis
  • Connectivity with sports devices
Features
Read full description

The CORE Thermal Sensor accurately measures your core body temperature and thermal strain on your body – continuously and non-invasively. Thermal data and insights are critical for facilitating safe and effective heat training and for performing optimally on race day. Designed for athletes at all levels, CORE will help to improve your training and performance in your personal adventures or races. IMPORTANT: The CORE app is designed to work with the CORE device which you can order at www.corebodytemp.com Here's how it works: • Set up your CORE sensor: connect your heart rate monitor and sports devices for optimal sensor use. • Measure your thermal vitals during training: mount the newly designed clip on your heart rate strap and snap in the CORE sensor. Shake the sensor to wake it up, wear it and track your thermal data. • Core body temperature: the interior temperature deep in your body, including organs and other tissues. A critical measure during sports, it can reach up to 40°C (104°F) during vigorous activity in hot environments. Be aware that hotter is not better – cooler is faster. • Heat Strain Index: A combination of your core body temperature and skin temperature representing the thermal strain on your body. The real-time feedback on how hard your body is working to stay cool, delivering a value from 0 (no heat strain) to around 10 (extremely high heat strain). • Heat Zones: Your Heat Strain Index divided into easy-to-use zones. Heat Zone 3 will likely lead to a performance loss, BUT it is the needed stimuli to create adaptations in your body. During heat training, strive for time in heat zone 3. During racing, stay cool and prevent a performance loss by staying in heat zone 1 or 2. • Heat Training Load: a cumulative daily metric of the heat strain on your body. A daily value of 10 out of 10 indicates ideal contribution to heat adaptations. More is not always better! • Heat Adaptation Score: Track your heat adaptations over time with effective heat training. Get a heat champion to perform best in the heat. Long-term heat training will most likely lead to improvements also in cool conditions. • Add your passive heat training: Supplementing your active heat training or general training with passive heat exposure in a sauna or hot bath. You can track your sessions in the app manually, contributing to your heat adaptation score. NOTE: do NOT take your CORE sensor into the sauna or hot environments. What else you can do in the CORE app: • Dig into the details: See a breakdown of your thermal data, and even see trends across days, weeks and months. • Share your CORE metrics with your friends through the social sharing feature, earning more kudos and likes • Connect your connectivity accounts (e.g. Garmin) to directly synchronize your data after the training. • Update your sensor to the latest firmware ensuring having the best sensor functionality. Note: CORE provides products and services designed for general fitness and training purposes. For accurate measurement readings during sports, a connection to a heart rate monitor is necessary. CORE products and services are not medical devices, not intended to treat or diagnose any disease, and should not be used as a substitute for professional medical advice, diagnosis or treatment. All content available through CORE products and services is for general informational purposes only.

Screenshots

Thermo4 screens
CORE Thermal Sensor4 screens

Verdict

The call

The clearest difference is rating: Thermo at 3.6 against CORE Thermal Sensor's 2.5. Thermo also leads on update cadence (monthly vs every 2 months). CORE Thermal Sensor's advantage is in-app purchases (none vs 8) and ads (none vs shown). On price, ratings volume, 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. Thermo sells 8 in-app purchases, starting at $10.99 per month. CORE Thermal Sensor asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Thermo holds the better App Store score, 3.6 against 2.5. Both are backed by a comparable volume of ratings — 97 and 35 respectively. Written reviews complicate that: 5% of Thermo's written reviews are positive against 16% of CORE Thermal Sensor's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Thermo ships an update monthly, CORE Thermal Sensor every 2 months. The most recent releases landed on September 16, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
Thermo versus CORE Thermal Sensor: the parameters behind the verdict, then further details
ParameterThermoCORE Thermal Sensor
PriceFreeFree
Rating3.6 (97 ratings) — better2.5 (35 ratings)
Positive reviews5.0% of reviews15.6% of reviews — better
Number of ratings97 — better35
Update frequencyMonthly — betterEvery 2 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFreemiumFree — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size85 MB55 MB
Age rating17+4+
DeveloperDaily Discoversgreenteg AG

Customer experience

Thermo

All ratings97 ratings
Positive62.9%
Neutral6.2%
Negative30.9%
Written reviews381 reviews
Positive5.0%
Neutral2.9%
Negative92.1%

CORE Thermal Sensor

All ratings35 ratings
Positive22.9%
Neutral20.0%
Negative57.1%
Written reviews32 reviews
Positive15.6%
Neutral25.0%
Negative59.4%

In-app purchases

8 purchases

Thermo

Subscriptions8
  • Thermo - 1 Month no trial1 Month trial$10.991 Month
  • Thermo Premium1 Month trial$12.991 Month
  • Thermo Premium - 1 month2 Months trial$12.991 Month
Show 5 more
  • Thermo - Digital Wellness3 Days trial$18.993 Months
  • Thermo - Digital Wellness +$19.991 Month
  • Thermo Plus - 12 months7 Days trial$27.991 Year
  • 3 months subscription3 Days trial$39.993 Months
  • 3 Month Subscription3 Days trial$59.993 Months
None

CORE Thermal Sensor

No in-app purchases

Questions

Is Thermo free?
Thermo is free to download, with in-app purchases available.
Is CORE Thermal Sensor free?
CORE Thermal Sensor is free to download, with no in-app purchases.
Which has better reviews, Thermo or CORE Thermal Sensor?
Thermo is rated higher. Thermo averages 3.6 out of 5 from 97 ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.
Do Thermo or CORE Thermal Sensor have ads?
Thermo shows ads; CORE Thermal Sensor does not.
Which is updated more often, Thermo or CORE Thermal Sensor?
Thermo ships an update monthly, and CORE Thermal Sensor every 2 months. Most recently, Thermo was updated on September 16, 2026 and CORE Thermal Sensor on September 23, 2026.

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