# CMS Mobile vs IRIS site

The clearest difference is update cadence: IRIS site at every 3 weeks against CMS Mobile's every 3 months. CMS Mobile's advantage is iOS requirement (12.2 vs 16.6). 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.

CMS Mobile ships an update every 3 months, IRIS site every 3 weeks. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | CMS Mobile | IRIS site |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Size | 271 MB | 24 MB |
| Requires iOS | **12.2** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Simma electronic Gesellschaft m.b.H](https://appshunter.io/developer/1404756458) | [STRABAG BRVZ](https://appshunter.io/developer/1459383713) |

## What reviewers say

### CMS Mobile

[App page](https://appshunter.io/ios/app/cms-mobile/id1424969702)

**Features:** macOS Compatibility

**In-app purchases:** none


### IRIS site

[App page](https://appshunter.io/ios/app/iris-site/id1494444140)

**In-app purchases:** none


## Frequently asked questions

### Is CMS Mobile free?

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

### Is IRIS site free?

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

### Do CMS Mobile or IRIS site have ads?

Neither CMS Mobile nor IRIS site shows ads.

### Which is updated more often, CMS Mobile or IRIS site?

CMS Mobile ships an update every 3 months, and IRIS site every 3 weeks. Most recently, CMS Mobile was updated on September 15, 2026 and IRIS site on September 10, 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.*