Thermonator - Thermodynamics

In-app purchases
4.6
2.85K reviews
100K+
Downloads
Content rating
Everyone
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About this app

- Thermodynamic calculator to solve problems and exercises from Thermodynamic Engineering books.
- Quickly calculates steam tables for water, air, ideal gases, refrigerants and other substances.
- Contains help and explanations of the main theoretical concepts, equations, first and second thermodynamic laws, etc.

Functionalities:

No advertising.

Interactive graph.

Share results.

Educational aids:
- Quick reminders on thermodynamic concepts and formulas.
- Step-by-step explanations to calculate the properties of states and processes.

Settings:
- Control system: Control mass, Control volume.
- Sign convention: ΔU = Q − W, ΔU = Q + W.
- Reference state: Normal boiling point, ASHRAE, IIR, Çengel - Boles, Moran - Shapiro, Reynolds, Sonntag - Van Wylen - Borgnakke.
- Ambient conditions: EPA, ISO, IUPAC, NIST.
- Units: International System of Units, Imperial units, United States customary units.

Results reports:
- Summary.
- Calculations.
- Balances: Mass balance.
- Information of substance: Formula, Molecular mass, Critical point, Normal boiling point, Specific heat.

Calculations:
- Calculation of states, processes and cycles.
- Properties: State, Saturation, Process, Cycle, Efficiencies.
- Processes: Isobar, Isotherm, Isochore, Isenthalpic, Adiabatic.
- Cycles: Basic cycles.
- Substances: Water, Noble gases, Perfect gases, Ideal gases.

Calculation wizards:
- Interpolation: One dimension.
- Units converter: Pressure, Temperature, Volume, Mass, Energy, Power.

Premium:

Calculations:
- Processes: Unknown, Polytropic, Split process, Stepped processes.
- Cycles: Cycles with ramifications.
- Substances: Real substances, Custom perfect gas.

Results reports:
- Balances: Energy balance, Boundary work, Entropy balance.

Calculation wizards:
- Interpolation: Two dimensions.
- Energy balance: Solve exercises of Nozzle, Internal friction, etc.
- Heat exchangers: Regenerative, Closed (2 Inputs), Open (2 Inputs), Open (3 Inputs), Mixed (3 Inputs).
- Cycles: Basic cycles, Advanced cycles with phase change and heat exchangers.
Updated on
May 29, 2025

Data safety

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Ratings and reviews

4.6
2.73K reviews
Lóránt Nováki
September 12, 2025
I loved it! It is free, and incredibly useful. It has a lot of functions, which usage can be easily understood with its built in tutorial.
2 people found this review helpful
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Xmuzzers Thermodynamics
September 15, 2025
Enjoy it :-)
counterblue42
September 26, 2024
If you're in a thermo class, this is what you're looking for. No bs, solid UI, highly functional, and the most modest in app purchase I've ever seen. I bought the highest level of access ($4.00) out of principle because of how much time and frustration this is going to save me.
17 people found this review helpful
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Xmuzzers Thermodynamics
September 27, 2024
❤️
Martin Guillot
April 10, 2021
I'm glad to see a mobile app for computing thermodynamic properties of refrigerants. That said, the user interface could use some improvement. 1. Id like to see a "clear" button to clear entries. I have trouble changing values. I get an error message that it requires two values after I enter the first new one, and can't figure out how to add the second one. 2. I can't get the delete state button to work. But this is a much needed app for engineers. Good job, and please keep improving it.
35 people found this review helpful
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Xmuzzers Thermodynamics
April 10, 2021
Hi Martin, thanks for your suggestions! Watch the help video to calculate a state. To delete it, select the "Delete" tool and touch the state on the graph. I don't have many characters available in these replies, please write me a mail and I will help you.

What’s new

New button "Restore" values in main window
New button "Resolve" in Heat exchanger window
New properties: Tf, Tg, RV
New window to calculate Saturation states
Improvements on the window of the Energy balance