# Airofit Legacy vs CORE Thermal Sensor

The clearest difference is review sentiment: Airofit Legacy at 76% against CORE Thermal Sensor's 19%. Airofit Legacy also leads on rating (4.5 vs 2.5) and ratings volume (1.3K vs 35). CORE Thermal Sensor's advantage is in-app purchases (none vs 6). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Airofit Legacy sells 6 in-app purchases, starting at $6.99 per month. CORE Thermal Sensor asks for nothing beyond the download.

Airofit Legacy holds the better App Store score, 4.5 against 2.5. That said, the two scores are not equally well evidenced: Airofit Legacy has 1.3K ratings behind it against 35, so its average is the more settled of the two. Written reviews point the same way: 76% of Airofit Legacy's written reviews are positive against 19% of CORE Thermal Sensor's.

Airofit Legacy ships an update every 5 weeks, CORE Thermal Sensor every 2 months. The most recent releases landed on October 25, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Airofit Legacy | CORE Thermal Sensor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (1.3K ratings)](https://appshunter.io/ios/app/airofit-legacy/id1469023267/reviews)** | [2.5 (35 ratings)](https://appshunter.io/ios/app/core-thermal-sensor/id1521866309/reviews) |
| Number of ratings | **1.3K** | 35 |
| Positive reviews | **75.8% of reviews** | 18.8% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 182 MB | 55 MB |
| Requires iOS | 16 | **15.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Airofit AS](https://appshunter.io/developer/1269490789) | [greenteg AG](https://appshunter.io/developer/1510577388) |

## What reviewers say

### Airofit Legacy

[App page](https://appshunter.io/ios/app/airofit-legacy/id1469023267)

This app pairs with a breathing trainer device to help you measure and improve your respiratory strength and lung capacity. It offers customized training programs for various goals like athletic performance, relaxation, and stress reduction, with progress tracking.

**Highlights:** Informative lung tests, Targeted training programs, Challenging exercises with visual/audio guidance, Engaging activity tracking, Personalized profile and reminders, Breathing exercises for strength, tolerance, capacity, performance, and relaxation

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Airofit PRO (monthly) | $6.99 | per month |
| Airofit (Monthly) | $9.99 | per month |
| Airofit PRO (yearly) | $39.99 | per year |
| Airofit Essential | $39.99 | per year |
| Airofit PRO (yearly) | $59.00 | per year |
| Airofit (Yearly) | $84.00 | per year |

**What reviewers like**

- 👍 Effective for improving breathing and lung capacity
- 🚀 Noticeable improvements in a short time
- 💪 Helpful for athletes and those with respiratory issues
- 📊 Provides useful metrics and progress tracking
- 🧘‍♀️ Aids in relaxation and stress reduction

**What reviewers complain about**

- 🐛 App crashes, freezes, or has connectivity issues
- 🔍 Lack of clear instructions or guidance on using the device
- 💰 Expensive device and subscription model
- 🔋 Battery life and charging issues
- 📱 App UI/UX could be improved

**Reported bugs**

- App not recognizing device or subscription
- Inaccurate lung capacity measurements
- Exercises not working as intended
- Progress data being lost after app updates

**Requested features**

- Offline mode for training sessions
- More customization options for training programs
- Integration with Apple Health or other fitness apps
- Better data export and analysis tools
- Improved customer support and responsiveness


### 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 Airofit Legacy free?

Airofit Legacy 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, Airofit Legacy or CORE Thermal Sensor?

Airofit Legacy is rated higher. Airofit Legacy averages 4.5 out of 5 from 1.3K ratings, while CORE Thermal Sensor averages 2.5 from 35 ratings.

### Do Airofit Legacy or CORE Thermal Sensor have ads?

Neither Airofit Legacy nor CORE Thermal Sensor shows ads.

### Which is updated more often, Airofit Legacy or CORE Thermal Sensor?

Airofit Legacy ships an update every 5 weeks, and CORE Thermal Sensor every 2 months. Most recently, Airofit Legacy was updated on October 25, 2026 and CORE Thermal Sensor on October 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.*