# PrO2 Fit vs ActivForce

The clearest difference is rating: ActivForce at 4.8 against PrO2 Fit's 3.3. ActivForce also leads on review sentiment (17% vs 0%). PrO2 Fit's advantage is iOS requirement (12.0 vs 17). On price, ratings volume, update cadence and ads there is nothing between them.

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

ActivForce holds the better App Store score, 4.8 against 3.3. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 0% of PrO2 Fit's written reviews are positive against 17% of ActivForce's.

PrO2 Fit ships an update monthly, ActivForce every 3 weeks. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | PrO2 Fit | ActivForce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (6 ratings)](https://appshunter.io/ios/app/pro2-fit/id1321623265/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/activforce-digital-testing/id6741608693/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | 0.0% of reviews | **16.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 25 MB | 29 MB |
| Requires iOS | **12.0** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [PrO2HEALTH](https://appshunter.io/developer/909203686) | [Activbody, Inc.](https://appshunter.io/developer/1077331801) |

## What reviewers say

### 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


### ActivForce

[App page](https://appshunter.io/ios/app/activforce-digital-testing/id6741608693)

This app syncs with a handheld device to provide real-time data for strength and range of motion testing. It helps practitioners optimize client care and recovery with accurate, data-driven insights and customizable testing sequences.

**Highlights:** Real-time strength and ROM data visualization, Customizable test sequences, Detailed data modeling and analysis, Offline functionality, Seamless web dashboard sync

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PrO2 Fit free?

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

### Is ActivForce free?

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

### Which has better reviews, PrO2 Fit or ActivForce?

ActivForce is rated higher. PrO2 Fit averages 3.3 out of 5 from 6 ratings, while ActivForce averages 4.8 from 5 ratings.

### Do PrO2 Fit or ActivForce have ads?

Neither PrO2 Fit nor ActivForce shows ads.

### Which is updated more often, PrO2 Fit or ActivForce?

PrO2 Fit ships an update monthly, and ActivForce every 3 weeks. Most recently, PrO2 Fit was updated on November 2, 2026 and ActivForce on November 4, 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.*