# Castel Regolo vs RED control

The clearest difference is update cadence: Castel Regolo at monthly against RED control's every 4 months. Castel Regolo also leads on iOS requirement (11.0 vs 13.0). 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.

Castel Regolo ships an update monthly, RED control every 4 months. The most recent releases landed on October 7, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | Castel Regolo | RED control |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 4 months |
| Size | 18 MB | 32 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Castel S.r.l.](https://appshunter.io/developer/1554507062) | [CAREL INDUSTRIES S.p.A.](https://appshunter.io/developer/1797037609) |

## What reviewers say

### Castel Regolo

[App page](https://appshunter.io/ios/app/castel-regolo/id1586287525)

**Features:** macOS Compatibility

**In-app purchases:** none


### RED control

[App page](https://appshunter.io/ios/app/red-control/id6471656241)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Castel Regolo free?

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

### Is RED control free?

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

### Do Castel Regolo or RED control have ads?

Neither Castel Regolo nor RED control shows ads.

### Which is updated more often, Castel Regolo or RED control?

Castel Regolo ships an update monthly, and RED control every 4 months. Most recently, Castel Regolo was updated on October 7, 2026 and RED control 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.*