# MoveFactorX vs FLEX Stronger

MoveFactorX and FLEX Stronger both sit at 4.3 stars, but that hides the real split: 71% of FLEX Stronger's written reviews are positive against 57% of MoveFactorX's. FLEX Stronger also leads on iOS requirement (12.0 vs 18.0). On price, rating, ratings volume and update cadence there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.3 for MoveFactorX against 4.4 for FLEX Stronger. Both are backed by a comparable volume of ratings — 9 and 8 respectively. Written reviews are what separate them: 57% of MoveFactorX's written reviews are positive against 71% of FLEX Stronger's.

MoveFactorX ships an update every 5 weeks, FLEX Stronger monthly. The most recent releases landed on September 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | MoveFactorX | FLEX Stronger |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/movefactorx/id1182677659/reviews) | **[4.4 (8 ratings)](https://appshunter.io/ios/app/flex-stronger/id1452436164/reviews)** |
| Number of ratings | **9** | 8 |
| Positive reviews | 57.1% of reviews | **71.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Monthly** |
| Monetization | Free | Free |
| Size | 51 MB | 83 MB |
| Requires iOS | 18.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [FIT7502 LLC](https://appshunter.io/developer/1289040326) | [Kinetic Performance](https://appshunter.io/developer/343232407) |

## What reviewers say

### MoveFactorX

[App page](https://appshunter.io/ios/app/movefactorx/id1182677659)

This app provides real-time performance feedback for sports and fitness training. It utilizes velocity-based training to analyze outputs like power and velocity, offering instant rep-by-rep insights. Designed to be accessible and practical for athletes.

**Highlights:** Velocity-based training (VBT), Instant rep-by-rep feedback, Power and velocity analysis, POP-100 metric, Budget-friendly products

**Features:** Vision Pro support

**In-app purchases:** none


### FLEX Stronger

[App page](https://appshunter.io/ios/app/flex-stronger/id1452436164)

This app revolutionizes weight training by syncing with a sensor to provide real-time performance feedback. Track, manage, and review your training like elite athletes, with automated workouts and group training options. It offers detailed metrics, video recording with data overlay, and a community feature for sharing and downloading workouts.

**Highlights:** Real-time performance feedback, Velocity-based training (VBT), Automated workouts, Group training for up to three people, Video recording with synced data, 1RM prediction, Workout creation and sharing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MoveFactorX free?

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

### Is FLEX Stronger free?

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

### Which has better reviews, MoveFactorX or FLEX Stronger?

FLEX Stronger is rated higher. MoveFactorX averages 4.3 out of 5 from 9 ratings, while FLEX Stronger averages 4.4 from 8 ratings.

### Do MoveFactorX or FLEX Stronger have ads?

Neither MoveFactorX nor FLEX Stronger shows ads.

### Which is updated more often, MoveFactorX or FLEX Stronger?

MoveFactorX ships an update every 5 weeks, and FLEX Stronger monthly. Most recently, MoveFactorX was updated on September 24, 2026 and FLEX Stronger on October 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.*