# Si vs airCloud Alarm Code

The clearest difference is update cadence: Si at monthly against airCloud Alarm Code's every 27 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.

Si ships an update monthly, airCloud Alarm Code every 27 months. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Si | airCloud Alarm Code |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/si-ca-mobileapp/id1471645951/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 27 months |
| Monetization | Free | — |
| Size | 94 MB | 7 MB |
| Requires iOS | **12** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SAUERMANN INDUSTRIE](https://appshunter.io/developer/1169513729) | [Bosch Thermotechnik GmbH](https://appshunter.io/developer/456233209) |

## What reviewers say

### Si

[App page](https://appshunter.io/ios/app/si-ca-mobileapp/id1471645951)

Remotely control and interact with specific combustion gas analyzers via Bluetooth. View real-time data, save measurements, and generate reports in various formats directly from your mobile device.

**Highlights:** Bluetooth connectivity, Real-time data viewing, Save measurements, Generate reports (CSV, PDF, XML), Email reports, Remote control

**In-app purchases:** none


### airCloud Alarm Code

[App page](https://appshunter.io/ios/app/aircloud-alarm-code/id6474610687)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Si free?

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

### Is airCloud Alarm Code free?

airCloud Alarm Code is free to download, with no in-app purchases.

### Do Si or airCloud Alarm Code have ads?

Neither Si nor airCloud Alarm Code shows ads.

### Which is updated more often, Si or airCloud Alarm Code?

Si ships an update monthly, and airCloud Alarm Code every 27 months. Most recently, Si was updated on October 6, 2026 and airCloud Alarm Code on October 5, 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.*