# Builder CMS vs RMS SIA

The clearest difference is iOS requirement: RMS SIA at 12.0 against Builder CMS's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Builder CMS ships an update every 2 months, RMS SIA monthly. The most recent releases landed on October 8, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Builder CMS | RMS SIA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 14 MB | 67 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Community Management Systems, LLC](https://appshunter.io/developer/1148413174) | [CMS Info Systems Limited](https://appshunter.io/developer/1569189836) |

## What reviewers say

### Builder CMS

[App page](https://appshunter.io/ios/app/builder-cms/id1516492556)

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

**In-app purchases:** none


### RMS SIA

[App page](https://appshunter.io/ios/app/rms-sia/id6463419381)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Builder CMS free?

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

### Is RMS SIA free?

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

### Do Builder CMS or RMS SIA have ads?

Neither Builder CMS nor RMS SIA shows ads.

### Which is updated more often, Builder CMS or RMS SIA?

Builder CMS ships an update every 2 months, and RMS SIA monthly. Most recently, Builder CMS was updated on October 8, 2026 and RMS SIA on October 12, 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.*