# HeartPeace vs Callibri Biofeedback

The clearest difference is rating: HeartPeace at 4.5 against Callibri Biofeedback's 3.0. HeartPeace also leads on update cadence (fortnightly vs every 4 months) and ratings volume (32 vs 1). Callibri Biofeedback's advantage is in-app purchases (none vs 1). On price, ads and device support there is nothing between them.

Both are free to download. HeartPeace sells 1 one-off in-app purchase. Callibri Biofeedback asks for nothing beyond the download.

HeartPeace holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: HeartPeace has 32 ratings behind it against 1, so its average is the more settled of the two.

HeartPeace ships an update fortnightly, Callibri Biofeedback every 4 months. The most recent releases landed on October 24, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | HeartPeace | Callibri Biofeedback |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (32 ratings)](https://appshunter.io/ios/app/heartpeace/id1487716966/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/callibri-biofeedback/id1517798639/reviews) |
| Number of ratings | **32** | 1 |
| Positive reviews | 81.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 89 MB | 269 MB |
| Requires iOS | **13.1** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Agustin Prats](https://appshunter.io/developer/1191486614) | [BRAINBIT INC.](https://appshunter.io/developer/1510548622) |

## What reviewers say

### HeartPeace

[App page](https://appshunter.io/ios/app/heartpeace/id1487716966)

This app guides meditation through real-time biofeedback based on heart rate variability. It uses visual animations and sounds to reflect your inner peace, helping you focus on breathing and nervous system balance.

**Highlights:** Real-time HRV biofeedback, Visual inner peace animation, Auditory feedback with sounds, Back camera heart rate monitoring, BLE heart rate monitor support, Health app integration

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Features | $6.99 | one-time |


### Callibri Biofeedback

[App page](https://appshunter.io/ios/app/callibri-biofeedback/id1517798639)

This system uses a sensor to measure muscle tone and visualizes your muscle activity in a game-like interface. It's designed for self-regulation training to improve muscle strength and bodily functions.

**Highlights:** Muscle tone evaluation (EMG signal), Visualizes muscle activity in games, Muscle restoration for stroke/CP, Home fitness muscle strengthening, Increases physiological reserves

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

**In-app purchases:** none


## Frequently asked questions

### Is HeartPeace free?

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

### Is Callibri Biofeedback free?

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

### Which has better reviews, HeartPeace or Callibri Biofeedback?

HeartPeace is rated higher. HeartPeace averages 4.5 out of 5 from 32 ratings, while Callibri Biofeedback averages 3.0 from 1 ratings.

### Do HeartPeace or Callibri Biofeedback have ads?

Neither HeartPeace nor Callibri Biofeedback shows ads.

### Which is updated more often, HeartPeace or Callibri Biofeedback?

HeartPeace ships an update fortnightly, and Callibri Biofeedback every 4 months. Most recently, HeartPeace was updated on October 24, 2026 and Callibri Biofeedback on October 15, 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.*