# Callibri Biofeedback vs BlueLine Alpha

The clearest difference is rating: BlueLine Alpha at 5.0 against Callibri Biofeedback's 3.0. BlueLine Alpha also leads on update cadence (every 2 months vs every 4 months). Callibri Biofeedback's advantage is iOS requirement (16.0 vs 26.0). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BlueLine Alpha holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

Callibri Biofeedback ships an update every 4 months, BlueLine Alpha every 2 months. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Callibri Biofeedback | BlueLine Alpha |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (1 ratings)](https://appshunter.io/ios/app/callibri-biofeedback/id1517798639/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/blueline-alpha/id6756986017/reviews)** |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 269 MB | 17 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | iPhone | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [BRAINBIT INC.](https://appshunter.io/developer/1510548622) | [Enes Arslan](https://appshunter.io/developer/1864075906) |

## What reviewers say

### 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


### BlueLine Alpha

[App page](https://appshunter.io/ios/app/blueline-alpha/id6756986017)

This application visualizes, records, and streams physiological and motion data from compatible hardware. It's designed for engineering, research, and educational purposes, offering real-time insights into signal integrity and device performance.

**Highlights:** Real-time data visualization, Physiological data recording, Motion data streaming (X, Y, Z axis), G-value calculation, Bluetooth Low Energy (BLE) connectivity, Engineering and research focused

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Callibri Biofeedback free?

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

### Is BlueLine Alpha free?

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

### Which has better reviews, Callibri Biofeedback or BlueLine Alpha?

BlueLine Alpha is rated higher. Callibri Biofeedback averages 3.0 out of 5 from 1 ratings, while BlueLine Alpha averages 5.0 from 1 ratings.

### Do Callibri Biofeedback or BlueLine Alpha have ads?

Neither Callibri Biofeedback nor BlueLine Alpha shows ads.

### Which is updated more often, Callibri Biofeedback or BlueLine Alpha?

Callibri Biofeedback ships an update every 4 months, and BlueLine Alpha every 2 months. Most recently, Callibri Biofeedback was updated on October 15, 2026 and BlueLine Alpha on October 28, 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.*