# Idrosistemi vs DSD

The clearest difference is update cadence: DSD at every 2 months against Idrosistemi's every 4 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.

Idrosistemi ships an update every 4 months, DSD every 2 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Idrosistemi | DSD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 21 MB | 14 MB |
| Requires iOS | **13.4** | 14.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Idrosistemi srl](https://appshunter.io/developer/1458841993) | [YARIX Srl](https://appshunter.io/developer/1690227520) |

## What reviewers say

### Idrosistemi

[App page](https://appshunter.io/ios/app/idrosistemi/id1458841994)

**Features:** macOS Compatibility

**In-app purchases:** none


### DSD

[App page](https://appshunter.io/ios/app/dsd-digital-security-desk/id6449720170)

**In-app purchases:** none


## Frequently asked questions

### Is Idrosistemi free?

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

### Is DSD free?

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

### Do Idrosistemi or DSD have ads?

Neither Idrosistemi nor DSD shows ads.

### Which is updated more often, Idrosistemi or DSD?

Idrosistemi ships an update every 4 months, and DSD every 2 months. Most recently, Idrosistemi was updated on October 26, 2026 and DSD on October 27, 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.*