Comparison

Castel Regolo vs RED control

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Castel Regolo

Features
Read full description

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.

About

RED control

Features
Read full description

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

Castel Regolo3 screens
RED control4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences ยท 4 level
Castel Regolo versus RED control: the parameters behind the verdict, then further details
ParameterCastel RegoloRED control
PriceFreeFree
Update frequencyMonthly โ€” betterEvery 4 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 โ€” better13.0
Further details โ€” not scored
Size18 MB32 MB
Age rating4+4+
DeveloperCastel S.r.l.CAREL INDUSTRIES S.p.A.

In-app purchases

None

Castel Regolo

No in-app purchases

None

RED control

No in-app purchases

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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