Comparison

Purple Patch 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

Purple Patch

Book fitness classes, view schedules, and find performance center locations. This app offers a structured and fun group fitness experience focused on endurance, strength, nutrition, and recovery for busy individuals.

Highlights
  • Book fitness classes
  • View class schedules
  • Find performance center locations
  • Review existing reservations
  • Coached, structured, progressive workouts
Features
Read full description

The official App of Purple Patch Fitness. Download the App today to find and book your Purple Patch classes. From the App, you can view the performance center location, class schedules, and review existing reservations. Join us today at Purple Patch to bring a new level of performance in your time-starved life via our pillars of endurance training, functional strength, nutrition, and recovery. We don't do random classes at Purple Patch -- as that guarantees random results -- we promise a customized experience within a group fitness environment with every part of your experience, coached, structured, progressive and most importantly fun. Discover more at www.purplepatchfitness.com or @purplepatchfitness on Instagram or check out the Purple Patch Podcast on Apple Podcasts

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

Purple Patch4 screens
CORE Thermal Sensor4 screens

Verdict

The call

The clearest difference is review sentiment: Purple Patch at 100% against CORE Thermal Sensor's 16%. Purple Patch also leads on rating (5.0 vs 2.5) and update cadence (every 3 weeks vs every 2 months). CORE Thermal Sensor's advantage is monetization model (free vs ad-supported) and device support (3 vs 1). On price, ratings volume, 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

Purple Patch holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 15 and 35 respectively. Written reviews point the same way: 100% of Purple Patch's written reviews are positive against 16% of CORE Thermal Sensor's.

UpkeepUpdate frequency

Purple Patch ships an update every 3 weeks, CORE Thermal Sensor every 2 months. The most recent releases landed on September 29, 2026 and October 6, 2026 respectively.

Scorecard5 real differences · 5 level
Purple Patch versus CORE Thermal Sensor: the parameters behind the verdict, then further details
ParameterPurple PatchCORE Thermal Sensor
PriceFreeFree
Rating5.0 (15 ratings) — better2.5 (35 ratings)
Positive reviews100.0% of reviews — better15.6% of reviews
Number of ratings1535 — better
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationAd-supportedFree — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.1 — better
Further details — not scored
Size38 MB55 MB
Age rating4+4+
DeveloperPurple Patch Fitness Incgreenteg AG

Customer experience

Purple Patch

All ratings15 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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

Purple Patch

No in-app purchases

None

CORE Thermal Sensor

No in-app purchases

Questions

Is Purple Patch free?
Purple Patch 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, Purple Patch or CORE Thermal Sensor?
Purple Patch is rated higher. Purple Patch averages 5.0 out of 5 from 15 ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.
Do Purple Patch or CORE Thermal Sensor have ads?
Neither Purple Patch nor CORE Thermal Sensor shows ads.
Which is updated more often, Purple Patch or CORE Thermal Sensor?
Purple Patch ships an update every 3 weeks, and CORE Thermal Sensor every 2 months. Most recently, Purple Patch was updated on September 29, 2026 and CORE Thermal Sensor on October 6, 2026.

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