# Opti Brain vs Callibri Biofeedback

The clearest difference is rating: Opti Brain at 3.7 against Callibri Biofeedback's 3.0. Opti Brain also leads on ratings volume (13 vs 1) and device support (3 vs 1). Callibri Biofeedback's advantage is in-app purchases (none vs 2). On price, update cadence and ads there is nothing between them.

Both are free to download. Opti Brain sells 2 in-app purchases, starting at $9.99 per month. Callibri Biofeedback asks for nothing beyond the download.

Opti Brain holds the better App Store score, 3.7 against 3.0. That said, the two scores are not equally well evidenced: Opti Brain has 13 ratings behind it against 1, so its average is the more settled of the two.

Opti Brain ships an update every 3 months, Callibri Biofeedback every 4 months. The most recent releases landed on September 10, 2026 and August 18, 2026 respectively.

## The numbers

| Metric | Opti Brain | Callibri Biofeedback |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (13 ratings)](https://appshunter.io/ios/app/opti-brain/id1029982015/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/callibri-biofeedback/id1517798639/reviews) |
| Number of ratings | **13** | 1 |
| Positive reviews | 36.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 159 MB | 269 MB |
| Requires iOS | **12.4** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Optiherence](https://appshunter.io/developer/948846804) | [BRAINBIT INC.](https://appshunter.io/developer/1510548622) |

## What reviewers say

### Opti Brain

[App page](https://appshunter.io/ios/app/opti-brain/id1029982015)

Visualize and map your brain activity using compatible headbands. Record, save, and compare brain data to understand your cognitive patterns. Discover your optimal performance state and analyze brain activity during various activities.

**Highlights:** Brain activity mapping, Data collection and saving, Customizable collections, Map and movie creation, Brain pattern interpretation, Activity-based comparison

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Opti Subscription | $9.99 | per month |
| Yearly Opti Subscription | $99.99 | per year |


### 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 Opti Brain free?

Opti Brain 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, Opti Brain or Callibri Biofeedback?

Opti Brain is rated higher. Opti Brain averages 3.7 out of 5 from 13 ratings, while Callibri Biofeedback averages 3.0 from 1 ratings.

### Do Opti Brain or Callibri Biofeedback have ads?

Neither Opti Brain nor Callibri Biofeedback shows ads.

### Which is updated more often, Opti Brain or Callibri Biofeedback?

Opti Brain ships an update every 3 months, and Callibri Biofeedback every 4 months. Most recently, Opti Brain was updated on September 10, 2026 and Callibri Biofeedback on August 18, 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.*