# Calibre Biometrics vs Ripper Performance Training

The clearest difference is in-app purchases: Ripper Performance Training at none against Calibre Biometrics's 1. On price, update cadence, ads and device support there is nothing between them.

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

Calibre Biometrics ships an update every 4 weeks, Ripper Performance Training every 5 weeks. The most recent releases landed on September 13, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Calibre Biometrics | Ripper Performance Training |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | Free | — |
| Size | 116 MB | 387 MB |
| Requires iOS | 15.4 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BreathTaking Tech LLC](https://appshunter.io/developer/1609706657) | [Ripper Performance Training LLC](https://appshunter.io/developer/1848880833) |

## What reviewers say

### 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 |


### Ripper Performance Training

[App page](https://appshunter.io/ios/app/ripper-performance-training/id6754560975)

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

**In-app purchases:** none


## Frequently asked questions

### Is Calibre Biometrics free?

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

### Is Ripper Performance Training free?

Ripper Performance Training is free to download, with no in-app purchases.

### Do Calibre Biometrics or Ripper Performance Training have ads?

Neither Calibre Biometrics nor Ripper Performance Training shows ads.

### Which is updated more often, Calibre Biometrics or Ripper Performance Training?

Calibre Biometrics ships an update every 4 weeks, and Ripper Performance Training every 5 weeks. Most recently, Calibre Biometrics was updated on September 13, 2026 and Ripper Performance Training on September 19, 2026.

---

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