# Calotech vs airCloud Alarm Code

The clearest difference is update cadence: Calotech at every 2 months against airCloud Alarm Code's every 27 months. airCloud Alarm Code's advantage is iOS requirement (13.0 vs 16.0). 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.

Calotech ships an update every 2 months, airCloud Alarm Code every 27 months. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Calotech | airCloud Alarm Code |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 27 months |
| Size | 27 MB | 7 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Calorie Fluor](https://appshunter.io/developer/1693605712) | [Bosch Thermotechnik GmbH](https://appshunter.io/developer/456233209) |

## What reviewers say

### Calotech

[App page](https://appshunter.io/ios/app/calotech/id6450924301)

**Features:** Vision Pro support

**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 Calotech free?

Calotech 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 Calotech or airCloud Alarm Code have ads?

Neither Calotech nor airCloud Alarm Code shows ads.

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

Calotech ships an update every 2 months, and airCloud Alarm Code every 27 months. Most recently, Calotech was updated on October 15, 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.*