Castel Regolo vs RED control
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Castel Regolo
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The Regolo APP of Castel is able to quickly calculate the relationship between the pressure and the temperature of the most common refrigerant gases in saturation conditions. The app is able to provide for each refrigerant also the thermodynamic qualities of each gas, including the global warming potential (GWP), and the ozone destruction potential (ODP). Within it is also possible to make a direct comparison between two different gases, comparing at the same time the differentiation saturation temperatures relative to a common reference pressure in the same screen view. All calculations in the slide rule were performed using extended curve fit models are based on the results of Refprop. In all zeotropic gases it is also possible to see both the dew point and the bubble point, thus allow the user to calculate the glide value.
RED control
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RED control is an application designed for refrigeration technicians, allowing for remote monitoring of food service and scientific refrigeration units. The strenghts of the app are - smart view of the installed plants and their status - push notification when alarms occur - simplified unit registration via QR code
Screenshots
Verdict
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.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
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.
| Parameter | Castel Regolo | RED control |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly โ better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 โ better | 13.0 |
| Further details โ not scored | ||
| Size | 18 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Castel S.r.l. | CAREL INDUSTRIES S.p.A. |
In-app purchases
Castel Regolo
No in-app purchases
RED control
No in-app purchases
Questions
Is Castel Regolo free?
Is RED control free?
Do Castel Regolo or RED control have ads?
Which is updated more often, Castel Regolo or RED control?
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