# LLume vs Calibre Biometrics

The clearest difference is rating: LLume at 5.0 against Calibre Biometrics's 4.5. LLume also leads on in-app purchases (none vs 1) and update cadence (weekly vs every 4 weeks). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Calibre Biometrics sells 1 in-app purchase, starting at $7.99 per month. LLume asks for nothing beyond the download.

LLume holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

LLume ships an update weekly, Calibre Biometrics every 4 weeks. The most recent releases landed on November 7, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | LLume | Calibre Biometrics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/llume/id6446151703/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/calibre-biometrics/id6743721886/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 82 MB | 116 MB |
| Requires iOS | 16.4 | **15.4** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Organic Robotics Corporation](https://appshunter.io/developer/1539165726) | [BreathTaking Tech LLC](https://appshunter.io/developer/1609706657) |

## What reviewers say

### LLume

[App page](https://appshunter.io/ios/app/llume/id6446151703)

This app allows athletes and coaches to record respiratory training sessions using a connected sensor. Users can monitor breathing performance, review detailed workout data, and track progress over time. Manage all training settings within a single, integrated platform.

**Highlights:** Capture respiratory training sessions, Review workout data, Track progress over time, Monitor breathing performance, Manage training settings

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### Calibre Biometrics

[App page](https://appshunter.io/ios/app/calibre-biometrics/id6743721886)

This app pairs with a wearable device to track and analyze key metabolic and performance metrics like VO2 Max and resting metabolic rate. It provides detailed insights into your body's energy expenditure and fat burning zones. Designed for informational and educational use, it complements professional health guidance.

**Highlights:** View biometric data, Record metabolic information, Analyze VO2 Max, Monitor Resting Metabolic Rate, Track FatMax and Calories, Companion to wearable tracker

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calibre Premium | $7.99 | per month |


## Frequently asked questions

### Is LLume free?

LLume is free to download, with no in-app purchases.

### Is Calibre Biometrics free?

Calibre Biometrics is free to download, with in-app purchases available.

### Which has better reviews, LLume or Calibre Biometrics?

LLume is rated higher. LLume averages 5.0 out of 5 from 4 ratings, while Calibre Biometrics averages 4.5 from 2 ratings.

### Do LLume or Calibre Biometrics have ads?

Neither LLume nor Calibre Biometrics shows ads.

### Which is updated more often, LLume or Calibre Biometrics?

LLume ships an update weekly, and Calibre Biometrics every 4 weeks. Most recently, LLume was updated on November 7, 2026 and Calibre Biometrics on November 4, 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.*