Thermonator - Thermodynamics

4.6
2.9K reviews
Content rating
Everyone
500K+
Downloads
Content rating
Everyone
In-App Purchases
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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 calculations.

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 System of Units, Traditional US units.

Calculations
- Properties: State, Saturation, Process, Cycle.
- Calculation of states, processes, and cycles.
- Warnings for sensitive calculations: Critical point, Saturation dome (PT), Liquid (v), Gas (Th).
- Processes: Polytropic, Isobar, Isotherm, Isochore, Isenthalpic, Adiabatic, Irreversible, Inlet+Outlet, Branches, Reheating, Subcooling.
- Substances: Noble gases, Ideal gases, Ideal gases (cp Variable), Custom gas, Real substances (Acetone, Air, Ammonia, Benzene, Butane, Carbon dioxide, Ethane, Ethanol, Ethylene, Heptane, Hexane, Isobutane, Isopentane, Methane, Nitrogen, Octane, Oxygen, Pentane, Propane, Propanol, Propylene, R-11, R-114, R-12, R-123, R-1234yf, R-124, R-13, R-134a, R-14, R-22, R-23, R-32, R-404a, R-407c, R-410a, R-500, R-502, R-507a, R-C318, SES36, Water).

Calculation wizards
- Interpolation: One dimension, Two dimensions.
- Units converter: Pressure, Temperature, Volume, Mass, Energy, Power.
- Energy balance: Solve exercises of Unknown process, Internal friction, Kinetic energy, Potential energy, etc.
- Heat exchangers: Generic, Regenerative, Closed, Open, Mixed.
- Cycles: Automatically solve 17 types of cycles. Carnot, Otto, Diesel, Dual-Mixed, Stirling, Joule-Brayton (Basic, Regenerative, Intercooler, Afterburner), Power Rankine (Basic, Reheating), Rankine with regenerative preheating (Closed, Open, Closed+Closed, Closed+Open), Cooling Rankine (Vapor-compression refrigeration).

Results reports
- Substances: Formula, Molecular mass, Critical point, Normal boiling point, Specific heat.
- Summary: Settings, States, Processes, Cycles.
- Calculations: Step-by-step calculations.
- Mass balance.
- Energy balance.
- Boundary work.
- Entropy balance.
Updated on
Jun 8, 2026

Data safety

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Ratings and reviews

4.6
2.77K reviews
Martin
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.
19 people found this review helpful
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Xmuzzers Thermodynamics Education
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 Education
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.
A Google user
February 12, 2020
This is an excellent app designed for person who are looking for an easier tool to appreciate thermodynamics principles. I am currently using it with the refrigerant substance plugin and it has been working flawlessly. Just want to say a big thank you to the creators, for your hard work in helping many to appreciate thermodynamics more. As we know thermodynamics is not an easy subject.
50 people found this review helpful
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Xmuzzers Thermodynamics Education
February 22, 2020
Your appreciations makes worthy all the invested efforts.... thanks a lot!

What’s new

- Entropy balance
- Internal generated entropy
- External generated entropy
- Universe entropy increment
- Irreversibility (Destroyed exergy)