# System Rx vs HEREXI Centrifuge Control

The clearest difference is update cadence: HEREXI Centrifuge Control at every 3 days against System Rx's every 3 weeks. System Rx's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

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

System Rx ships an update every 3 weeks, HEREXI Centrifuge Control every 3 days. The most recent releases landed on October 11, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | System Rx | HEREXI Centrifuge Control |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 3 days** |
| Size | 2 MB | 16 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Mohamed Saud](https://appshunter.io/developer/1797283594) | [Delai Xun](https://appshunter.io/developer/1895391618) |

## What reviewers say

### System Rx

[App page](https://appshunter.io/ios/app/system-rx/id6761538119)

**Features:** Vision Pro support

**In-app purchases:** none


### HEREXI Centrifuge Control

[App page](https://appshunter.io/ios/app/herexi-centrifuge-control/id6763592729)

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

**In-app purchases:** none


## Frequently asked questions

### Is System Rx free?

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

### Is HEREXI Centrifuge Control free?

HEREXI Centrifuge Control is free to download, with no in-app purchases.

### Do System Rx or HEREXI Centrifuge Control have ads?

Neither System Rx nor HEREXI Centrifuge Control shows ads.

### Which is updated more often, System Rx or HEREXI Centrifuge Control?

System Rx ships an update every 3 weeks, and HEREXI Centrifuge Control every 3 days. Most recently, System Rx was updated on October 11, 2026 and HEREXI Centrifuge Control on October 13, 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.*