# CRD ONE vs Selvazzano Dentro

The clearest difference is update cadence: Selvazzano Dentro at every 3 weeks against CRD ONE's every 9 months. CRD ONE's advantage is iOS requirement (11.0 vs 15.1). 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.

CRD ONE ships an update every 9 months, Selvazzano Dentro every 3 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CRD ONE | Selvazzano Dentro |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 8 MB | 56 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [CARDIN ELETTRONICA S.p.A.](https://appshunter.io/developer/965252906) | [Ferrarese Luca](https://appshunter.io/developer/350243224) |

## What reviewers say

### CRD ONE

[App page](https://appshunter.io/ios/app/crd-one/id965252907)

Control and monitor your Cardin security and automation systems remotely. Activate receiver outputs, check input statuses, and send commands to PRO and TRADE ECUs. Monitor command and security devices for PRO ECUs.

**Highlights:** Activate 3G/WF receiver outputs, Monitor input status (open/closed), Send commands to PRO and TRADE ECUs, Monitor command and security devices (PRO ECUs)

**Features:** macOS Compatibility

**In-app purchases:** none


### Selvazzano Dentro

[App page](https://appshunter.io/ios/app/selvazzano-dentro/id1565386731)

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

**In-app purchases:** none


## Frequently asked questions

### Is CRD ONE free?

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

### Is Selvazzano Dentro free?

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

### Do CRD ONE or Selvazzano Dentro have ads?

Neither CRD ONE nor Selvazzano Dentro shows ads.

### Which is updated more often, CRD ONE or Selvazzano Dentro?

CRD ONE ships an update every 9 months, and Selvazzano Dentro every 3 weeks. Most recently, CRD ONE was updated on October 6, 2026 and Selvazzano Dentro on October 8, 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.*