# ReactionX vs KINVENT

The clearest difference is in-app purchases: ReactionX at none against KINVENT's 8. ReactionX also leads on review sentiment (100% vs 80%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. KINVENT sells 8 in-app purchases, starting at $34.99 per month. ReactionX asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for ReactionX against 5.0 for KINVENT. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews are what separate them: 100% of ReactionX's written reviews are positive against 80% of KINVENT's.

ReactionX ships an update every 6 weeks, KINVENT every 3 weeks. The most recent releases landed on October 30, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ReactionX | KINVENT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/reactionx/id1515855584/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/kinvent/id1625709856/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | **100.0% of reviews** | 80.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 34 MB | 475 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | +4 |
| Developer | [学斌 赵](https://appshunter.io/developer/1514555505) | [KINVENT BIOMECANIQUE](https://appshunter.io/developer/1346120156) |

## What reviewers say

### ReactionX

[App page](https://appshunter.io/ios/app/reactionx/id1515855584)

Enhance your athletic performance with this app, designed to be used with specialized training lamps. Improve your speed and reaction times through professional sports training exercises.

**Highlights:** Professional sports training, Speed improvement, Reaction time enhancement, Compatible with training lamps hardware

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

**In-app purchases:** none


### KINVENT

[App page](https://appshunter.io/ios/app/kinvent/id1625709856)

This app empowers health and sports professionals to precisely track motion, force, and recovery. It offers real-time biofeedback, over 100 guided protocols, and personalized patient profiles with comprehensive reporting. Works offline with local data storage and optional cloud syncing.

**Highlights:** Real-time biofeedback with visualizations, Over 100 guided protocols, Personalized patient profiles, Offline assessment capability, Local and cloud data storage, Multilingual support

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kforce Pro Monthly Licence | $34.99 | per month |
| Starter Monthly License | $34.99 | per month |
| Premium Monthly License | $59.99 | per month |
| Kforce Pro+ Monthly Licence | $114.99 | per month |
| Excellence Monthly Licence | $114.99 | per month |
| Kforce Pro Yearly Licence | $349.99 | per year |
| Starter Yearly License | $349.99 | per year |
| Premium Yearly Licence | $599.99 | per year |


## Frequently asked questions

### Is ReactionX free?

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

### Is KINVENT free?

KINVENT is free to download, with in-app purchases available.

### Which has better reviews, ReactionX or KINVENT?

ReactionX and KINVENT are both rated 5.0 out of 5 on the App Store, from 3 and 3 ratings respectively.

### Do ReactionX or KINVENT have ads?

Neither ReactionX nor KINVENT shows ads.

### Which is updated more often, ReactionX or KINVENT?

ReactionX ships an update every 6 weeks, and KINVENT every 3 weeks. Most recently, ReactionX was updated on October 30, 2026 and KINVENT on October 27, 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.*