# VO2 Master Manager vs CORE Thermal Sensor

The clearest difference is review sentiment: VO2 Master Manager at 67% against CORE Thermal Sensor's 16%. VO2 Master Manager also leads on rating (4.0 vs 2.5). CORE Thermal Sensor's advantage is ratings volume (35 vs 9). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

VO2 Master Manager holds the better App Store score, 4.0 against 2.5. Both are backed by a comparable volume of ratings — 9 and 35 respectively. Written reviews point the same way: 67% of VO2 Master Manager's written reviews are positive against 16% of CORE Thermal Sensor's.

VO2 Master Manager ships an update every 5 weeks, CORE Thermal Sensor every 2 months. The most recent releases landed on September 9, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | VO2 Master Manager | CORE Thermal Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (9 ratings)](https://appshunter.io/ios/app/vo2-master-manager/id936519055/reviews)** | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) |
| Number of ratings | 9 | **35** |
| Positive reviews | **66.7% of reviews** | 15.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 87 MB | 55 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [VO2 MASTER HEALTH SENSORS INC](https://appshunter.io/developer/936519054) | [greenteg AG](https://appshunter.io/developer/1510577388) |

## What reviewers say

### VO2 Master Manager

[App page](https://appshunter.io/ios/app/vo2-master-manager/id936519055)

This tool collects and displays performance data including VO2, heart rate, and power. It also monitors speed, cadence, and muscle oxygenation for comprehensive analysis.

**Highlights:** VO2 monitoring, Heart rate tracking, Power data collection, Speed and cadence monitoring, Muscle oxygenation data, Performance analysis

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### CORE Thermal Sensor

[App page](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is VO2 Master Manager free?

VO2 Master Manager 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, VO2 Master Manager or CORE Thermal Sensor?

VO2 Master Manager is rated higher. VO2 Master Manager averages 4.0 out of 5 from 9 ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.

### Do VO2 Master Manager or CORE Thermal Sensor have ads?

Neither VO2 Master Manager nor CORE Thermal Sensor shows ads.

### Which is updated more often, VO2 Master Manager or CORE Thermal Sensor?

VO2 Master Manager ships an update every 5 weeks, and CORE Thermal Sensor every 2 months. Most recently, VO2 Master Manager was updated on September 9, 2026 and CORE Thermal Sensor on September 23, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*