
Thermodynamic Cycles
Thermodynamic Cycle Solver
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Free
In-App Purchases
About
Thermo Cycles is a powerful thermodynamic cycle calculator designed for engineering students and professionals. Solve 12 thermodynamic cycles quickly and accurately — just enter the values you know, and the iterative constraint solver computes the rest.
Supported cycles:
- Carnot Cycle
- Otto Cycle
- Diesel Cycle
- Brayton Cycle
- Regenerative Brayton Cycle
- Rankine Cycle
- Reheated Rankine Cycle
- Open Feedwater Heater Cycle
- Closed Feedwater Heater Cycle
- Flash Chamber Cycle
- Heat Pump / Refrigeration Cycle
- Cascading Refrigeration Cycle
Features:
- Built-in fluid property tables for steam, R-134a, and more
- Iterative constraint solver — enter what you know, get the full solution
- State point properties automatically resolved from fluid tables
- Clean, intuitive interface optimized for studying and problem sets
- Available in 21 languages
Get started free with the Carnot, Otto, and Rankine cycles included. Unlock additional cycle packs via in-app purchase.
Whether you are studying for exams or solving homework problems, Thermo Cycles makes thermodynamic analysis fast and straightforward.
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What's New in Thermodynamic Cycles
2.0.3
May 6, 2026
Fixed: in-app purchases now restore automatically when you install Thermo Cycles on a second device with the same store account. No more "you already own this item".
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In-App Purchases
$0.49
Gas Power Cycles
Unlocks Diesel, Brayton, Regenerative Brayton




