# Gene Messer Amarillo Connect vs icistaff OS

The clearest difference is update cadence: icistaff OS at every 5 weeks against Gene Messer Amarillo Connect's every 10 months. On price, ads, in-app purchases and device support there is nothing between them.

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

Gene Messer Amarillo Connect ships an update every 10 months, icistaff OS every 5 weeks. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Gene Messer Amarillo Connect | icistaff OS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 5 weeks** |
| Size | 161 MB | 73 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [VBI Group LLC](https://appshunter.io/developer/1434340528) | [B1 YONETIM SISTEMLERI YAZILIM VE DANISMANLIK Limited Sirketi](https://appshunter.io/developer/634374671) |

## What reviewers say

### Gene Messer Amarillo Connect

[App page](https://appshunter.io/ios/app/gene-messer-amarillo-connect/id6479434946)

**Features:** macOS Compatibility

**In-app purchases:** none


### icistaff OS

[App page](https://appshunter.io/ios/app/icistaff-os/id6482296720)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gene Messer Amarillo Connect free?

Gene Messer Amarillo Connect is free to download, with no in-app purchases.

### Is icistaff OS free?

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

### Do Gene Messer Amarillo Connect or icistaff OS have ads?

Neither Gene Messer Amarillo Connect nor icistaff OS shows ads.

### Which is updated more often, Gene Messer Amarillo Connect or icistaff OS?

Gene Messer Amarillo Connect ships an update every 10 months, and icistaff OS every 5 weeks. Most recently, Gene Messer Amarillo Connect was updated on October 25, 2026 and icistaff OS on October 24, 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.*