Compex Coach vs CORE Thermal Sensor
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Compex Coach
This app guides users in setting training objectives, planning sessions, and receiving reminders for their Compex device. It offers detailed instructions on electrode placement, intensity management, and program specifics for various fitness and recovery goals. Users can also share their progress with friends.
- Set training objectives
- Plan Compex sessions
- Reminders for sessions
- Electrode placement guidance
- Program details and explanations
- Share sessions with friends
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Compex Coach App will guide you to set up your objectives, it will help you to plan your training and remind you when to have your next Compex session. Also, you can easily share your sessions with your friends. Examples of objectives available*: - Prepare for a 10km, half-marathon, marathon - Prepare for a cycling race - Prepare for a triathlon - Improve your core stabilisation - Increase your muscle volume - Improve your strength - Treat your tendinopathy - Treat your cervical pain - Treat your contracture - Prevent cramps - Prevent low back pain - Tone your arms - Firm your thighs And many others... App features: - Find an objective that fits your needs (eg: Prepare for a marathon, triathlon or cycling race, Treat a back pain or tendinopathy, Increase your strength…) and set up the plan to reach it. - Show you the right electrode placements - Display precise images of electrodes placements and body position according to the programme - Explain how to manage the stimulation intensity according to the programme - Provide all the details for each Compex programme (description, usages, effects, stimulation intensity, electrode placements) - Explain how muscle stimulation works For more information on Compex product, please visit our website www.compex.com *Objectives availability related to the product ***This app doesn't control your Compex device, it is meant to be used as a standalone app***
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.
- 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
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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
Verdict
The clearest difference is rating: Compex Coach at 4.7 against CORE Thermal Sensor's 2.5. Compex Coach also leads on review sentiment (57% vs 16%) and ratings volume (277 vs 35). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Compex Coach holds the better App Store score, 4.7 against 2.5. That said, the two scores are not equally well evidenced: Compex Coach has 277 ratings behind it against 35, so its average is the more settled of the two. Written reviews point the same way: 57% of Compex Coach's written reviews are positive against 16% of CORE Thermal Sensor's.
Compex Coach ships an update every 3 months, CORE Thermal Sensor every 2 months. The most recent releases landed on September 18, 2026 and September 23, 2026 respectively.
| Parameter | Compex Coach | CORE Thermal Sensor |
|---|---|---|
| Price | Free | Free |
| Rating | 4.7 (277 ratings) — better | 2.5 (35 ratings) |
| Positive reviews | 57.1% of reviews — better | 15.6% of reviews |
| Number of ratings | 277 — better | 35 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 73 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | DJO Global | greenteg AG |
Customer experience
Compex Coach
CORE Thermal Sensor
In-app purchases
Compex Coach
No in-app purchases
CORE Thermal Sensor
No in-app purchases
Questions
Is Compex Coach free?
Is CORE Thermal Sensor free?
Which has better reviews, Compex Coach or CORE Thermal Sensor?
Do Compex Coach or CORE Thermal Sensor have ads?
Which is updated more often, Compex Coach or CORE Thermal Sensor?
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