Comparison

BodyRec 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

BodyRec

Easily record and manage your daily body temperature readings. View your history on a calendar, export data via email as CSV, and customize the app's appearance. Supports Fahrenheit and iCloud backup.

Highlights
  • Record and edit temperature data
  • Calendar view of historical data
  • Export data as CSV via email
  • Fahrenheit display option
  • iCloud backup support
  • Customizable color design
  • IC card registration
Features
Read full description

・ It is possible to register (edit) the measured body temperature. -It is possible to browse the data by specifying the day on the calendar display. -The registered data can be sent by e-mail as CSV data (UTF-8). -Display the button in Fahrenheit with the Fahrenheit switch in the setting menu. ・ Backup using iCloud is possible. -The color design can be changed. -Registration can now be performed with an IC card. -You can now register your name in the IC card information. The data sent by e-mail can be used by importing it into other applications. <Reading IC card> The types of IC cards that can be read are limited. Type-A (MIFARE system) NFC TAG "MIFARE Classic" is not supported. Type-F (FeliCa system, FeliCa Lite-S) Japan (transportation system, Edy system) Others

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

BodyRec2 screens
CORE Thermal Sensor4 screens

Verdict

The call

The clearest difference is rating: CORE Thermal Sensor at 2.5 against BodyRec's 1.0. CORE Thermal Sensor also leads on ads (none vs shown) and ratings volume (35 vs 1). BodyRec's advantage is update cadence (every 2 weeks vs every 2 months). On price, in-app purchases, 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

CORE Thermal Sensor holds the better App Store score, 2.5 against 1.0. That said, the two scores are not equally well evidenced: CORE Thermal Sensor has 35 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 0% of BodyRec's written reviews are positive against 16% of CORE Thermal Sensor's.

UpkeepUpdate frequency

BodyRec ships an update every 2 weeks, CORE Thermal Sensor every 2 months. The most recent releases landed on June 4, 2026 and September 23, 2026 respectively.

Scorecard6 real differences · 4 level
BodyRec versus CORE Thermal Sensor: the parameters behind the verdict, then further details
ParameterBodyRecCORE Thermal Sensor
PriceFreeFree
Rating1.0 (1 ratings)2.5 (35 ratings) — better
Positive reviews0.0% of reviews15.6% of reviews — better
Number of ratings135 — better
Update frequencyEvery 2 weeks — betterEvery 2 months
AdsYesNo — better
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.0 — better15.1
Further details — not scored
Size23 MB55 MB
Age rating4+4+
DeveloperITROOM LLCgreenteg AG

Customer experience

BodyRec

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

CORE Thermal Sensor

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

In-app purchases

None

BodyRec

No in-app purchases

None

CORE Thermal Sensor

No in-app purchases

Questions

Is BodyRec free?
BodyRec is free to download, with no in-app purchases.
Is CORE Thermal Sensor free?
CORE Thermal Sensor is free to download, with no in-app purchases.
Which has better reviews, BodyRec or CORE Thermal Sensor?
CORE Thermal Sensor is rated higher. BodyRec averages 1.0 out of 5 from 1 ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.
Do BodyRec or CORE Thermal Sensor have ads?
BodyRec shows ads; CORE Thermal Sensor does not.
Which is updated more often, BodyRec or CORE Thermal Sensor?
BodyRec ships an update every 2 weeks, and CORE Thermal Sensor every 2 months. Most recently, BodyRec was updated on June 4, 2026 and CORE Thermal Sensor on September 23, 2026.

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