# mTrigger™ Biofeedback vs PrO2 Fit

The clearest difference is review sentiment: mTrigger™ Biofeedback at 100% against PrO2 Fit's 0%. mTrigger™ Biofeedback also leads on rating (5.0 vs 3.5). PrO2 Fit's advantage is update cadence (monthly vs every 13 months). 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.

mTrigger™ Biofeedback holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews point the same way: 100% of mTrigger™ Biofeedback's written reviews are positive against 0% of PrO2 Fit's.

mTrigger™ Biofeedback ships an update every 13 months, PrO2 Fit monthly. The most recent releases landed on October 4, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | mTrigger™ Biofeedback | PrO2 Fit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (7 ratings)](https://appshunter.io/ios/app/mtrigger-biofeedback/id1240335569/reviews)** | [3.5 (4 ratings)](https://appshunter.io/ios/app/pro2-fit/id1321623265/reviews) |
| Number of ratings | **7** | 4 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Monthly** |
| Monetization | Free | Free |
| Size | 24 MB | 25 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [mTrigger](https://appshunter.io/developer/1240335568) | [PrO2HEALTH](https://appshunter.io/developer/909203686) |

## What reviewers say

### mTrigger™ Biofeedback

[App page](https://appshunter.io/ios/app/mtrigger-biofeedback/id1240335569)

This mobile application connects to a biofeedback device to monitor muscle activity. It allows users to train, play, and track progress towards recovery with real-time performance feedback for rehabilitation programs.

**Highlights:** Connects to mTrigger Biofeedback Device, Multi-channel EMG muscle monitoring, Customizable training settings, Progress tracking for recovery, Real-time performance feedback, Use in PT clinics or at home

**Features:** macOS Compatibility

**In-app purchases:** none


### PrO2 Fit

[App page](https://appshunter.io/ios/app/pro2-fit/id1321623265)

This app pairs with a respiratory muscle trainer to help users measure and improve their breathing strength and performance. It guides users through resisted breathing exercises to enhance respiratory function.

**Highlights:** Measure respiratory strength, Improve breathing performance, Resisted breathing exercises, Companion device integration, Track respiratory progress

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is mTrigger™ Biofeedback free?

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

### Is PrO2 Fit free?

PrO2 Fit is free to download, with no in-app purchases.

### Which has better reviews, mTrigger™ Biofeedback or PrO2 Fit?

mTrigger™ Biofeedback is rated higher. mTrigger™ Biofeedback averages 5.0 out of 5 from 7 ratings, while PrO2 Fit averages 3.5 from 4 ratings.

### Do mTrigger™ Biofeedback or PrO2 Fit have ads?

Neither mTrigger™ Biofeedback nor PrO2 Fit shows ads.

### Which is updated more often, mTrigger™ Biofeedback or PrO2 Fit?

mTrigger™ Biofeedback ships an update every 13 months, and PrO2 Fit monthly. Most recently, mTrigger™ Biofeedback was updated on October 4, 2026 and PrO2 Fit on October 5, 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.*