Refrigerant Calculator vs Frostest
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Refrigerant Calculator
This app helps refrigeration technicians, engineers, and students analyze refrigeration cycles and convert pressure/temperature data. It offers offline fluid libraries, cycle analysis with thermodynamic properties, and floating setpoint estimates for energy savings. Calculations can be performed offline without an account.
- Pressure/temperature conversion
- Offline fluid library (163 fluids)
- Refrigeration cycle analysis
- Floating setpoint estimates
- Calculation history
- Offline functionality
- Multi-language support
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Refrigerant Calculator brings saturation pressure/temperature conversion, refrigeration cycle analysis and floating setpoint estimates together in one app for refrigeration technicians, engineers and students. PRESSURE AND TEMPERATURE • Convert pressure to saturation temperature or temperature to pressure. • Search an offline library of 163 fluids and mixtures by name, code or formula. • Choose gauge or absolute pressure and work with bar, psi, kPa, MPa, °C, °F and K. • Select dew or bubble point for mixtures and consult available fluid properties and operating ranges. REFRIGERATION CYCLES • Analyze single-stage and two-stage cycles with real-fluid thermodynamic properties from CoolProp. • Review cooling capacity, compressor power, COP, mass flow and thermodynamic states. • Use pressure-ratio-based efficiency estimates within their supported ranges, or enter an isentropic efficiency. • Find the intermediate condition that minimizes total compressor power in the two-stage model. Compare a manual setting with the model optimum in kW and percent. • Export a PDF calculation report with inputs, results, equations, assumptions and references. OTIMIZ IUS Explore intelligent floating setpoint scenarios and estimated energy and cost savings. In this version, this module is limited to R717 (ammonia) and available Brazilian locations. Results depend on the entered operating conditions and assumptions. Worldwide support for Otimiz ius is coming soon. EVERYDAY USE • Keep calculation history and favorite conversions or cycles on your device. • Switch between light and dark themes. • Use the interface in Portuguese, English or Spanish. • Perform calculations offline without creating an account. The results support technical analysis and do not replace equipment manufacturer data, applicable standards or professional assessment. Cycle results describe the selected model and assumptions; they are not measured equipment performance.
Frostest
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This application is a program for calculating pressures and temperatures of the most popular brands of refrigerants. This type of program is an absolutely necessary tool for specialists in the repair of refrigeration equipment. The application has a positive design. And the contrasting colors of the screens allow you to use it in bright sunlight. The functionality is represented only by the most necessary calculations - nothing superfluous. At the same time, there is a mode: Bubble / Dew
Screenshots
Verdict
The clearest difference is device support: Refrigerant Calculator at 3 against Frostest's 1. On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 6, 2026 and November 8, 2026 respectively.
| Parameter | Refrigerant Calculator | Frostest |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (3 ratings) — better | — |
| Positive reviews | 50.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 33 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Caio Pinheiro | Oleg Kotkov |
In-app purchases
Refrigerant Calculator
No in-app purchases
Frostest
No in-app purchases




