# MySirena vs CALDO SYSTEM

The clearest difference is update cadence: CALDO SYSTEM at fortnightly against MySirena's every 3 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.

MySirena ships an update every 3 months, CALDO SYSTEM fortnightly. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | MySirena | CALDO SYSTEM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Size | 86 MB | 55 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sirena S.p.a](https://appshunter.io/developer/1671784902) | [RuneLab](https://appshunter.io/developer/1497549456) |

## What reviewers say

### MySirena

[App page](https://appshunter.io/ios/app/mysirena/id1671784900)

**In-app purchases:** none


### CALDO SYSTEM

[App page](https://appshunter.io/ios/app/caldo-system/id6748325733)

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

**In-app purchases:** none


## Frequently asked questions

### Is MySirena free?

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

### Is CALDO SYSTEM free?

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

### Do MySirena or CALDO SYSTEM have ads?

Neither MySirena nor CALDO SYSTEM shows ads.

### Which is updated more often, MySirena or CALDO SYSTEM?

MySirena ships an update every 3 months, and CALDO SYSTEM fortnightly. Most recently, MySirena was updated on October 24, 2026 and CALDO SYSTEM on October 18, 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.*