# mTrigger Muscle Ball vs ActivForce

The clearest difference is review sentiment: mTrigger Muscle Ball at 67% against ActivForce's 17%. mTrigger Muscle Ball also leads on iOS requirement (15.6 vs 17). ActivForce's advantage is rating (4.8 vs 4.3) and update cadence (every 3 weeks vs every 5 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.

ActivForce holds the better App Store score, 4.8 against 4.3. Both are backed by a comparable volume of ratings — 4 and 5 respectively. Written reviews complicate that: 67% of mTrigger Muscle Ball's written reviews are positive against 17% of ActivForce's, so the app with the better star average is not the one people write more warmly about.

mTrigger Muscle Ball ships an update every 5 months, ActivForce every 3 weeks. The most recent releases landed on October 4, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | mTrigger Muscle Ball | ActivForce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (4 ratings)](https://appshunter.io/ios/app/mtrigger-muscle-ball/id1436093951/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/activforce-digital-testing/id6741608693/reviews)** |
| Number of ratings | 4 | **5** |
| Positive reviews | **66.7% of reviews** | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 76 MB | 29 MB |
| Requires iOS | **15.6** | 17 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [mTrigger](https://appshunter.io/developer/1240335568) | [Activbody, Inc.](https://appshunter.io/developer/1077331801) |

## What reviewers say

### mTrigger Muscle Ball

[App page](https://appshunter.io/ios/app/mtrigger-muscle-ball/id1436093951)

Turn your muscle exercises into an interactive game. Control in-game elements by engaging specific muscle groups with a compatible biofeedback device. Navigate challenges and reach goals through targeted muscle activation.

**Highlights:** Gamified biofeedback therapy, Use muscle exercises as game controller, Navigate labyrinth challenges, Variety of tracks based on muscle groups, Adjust time parameters and reps

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

**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 mTrigger Muscle Ball free?

mTrigger Muscle Ball 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, mTrigger Muscle Ball or ActivForce?

ActivForce is rated higher. mTrigger Muscle Ball averages 4.3 out of 5 from 4 ratings, while ActivForce averages 4.8 from 5 ratings.

### Do mTrigger Muscle Ball or ActivForce have ads?

Neither mTrigger Muscle Ball nor ActivForce shows ads.

### Which is updated more often, mTrigger Muscle Ball or ActivForce?

mTrigger Muscle Ball ships an update every 5 months, and ActivForce every 3 weeks. Most recently, mTrigger Muscle Ball was updated on October 4, 2026 and ActivForce on October 2, 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.*