Thermodynamic Cycles vs Physics Formulas
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
Thermodynamic Cycles
Read full descriptionHide full description
Thermo Cycles is a powerful thermodynamic cycle calculator designed for engineering students and professionals. Solve 12 thermodynamic cycles quickly and accurately โ 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 โ 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.
Physics Formulas
Read full descriptionHide full description
PhysRef is the complete physics formula reference designed for students, engineers, and science enthusiasts. Access hundreds of formulas, physical constants, and built-in calculators - all without internet connection. COMPREHENSIVE FORMULA DATABASE Browse formulas organized by topic: Mechanics, Thermodynamics, Waves, Electricity and Magnetism, Optics, and Modern Physics. Each formula includes variable definitions, units, and related concepts. BUILT-IN CALCULATORS Stop doing manual calculations. Enter your known values and instantly compute the unknown variable. Every calculator validates inputs and displays results with appropriate units. PHYSICAL CONSTANTS TABLE Quick access to fundamental constants including speed of light, gravitational constant, Planck's constant, electron mass, Boltzmann constant, and dozens more. All values use standard reference data. UNIT CONVERTER Convert between units across 14 categories: length, mass, time, velocity, acceleration, force, energy, power, pressure, temperature, electric charge, electric current, angle, and frequency. PERSONAL NOTES Add your own notes to any formula. Perfect for exam prep, recording problem-solving strategies, or marking formulas you find tricky. FORMULA DERIVATIONS Understand where formulas come from. See step-by-step derivations that connect fundamental principles to the equations you use. WORKS COMPLETELY OFFLINE All content is bundled in the app. Study on airplanes, in basements, or anywhere without signal. No account required. No internet needed. DESIGNED FOR STUDENTS Covers content from AP Physics 1, AP Physics 2, AP Physics C, IB Physics, and introductory university physics courses. Whether you are preparing for an exam or solving homework problems, PhysRef has you covered. PRIVACY FIRST Your data stays on your device. We do not collect personal information. No tracking. No analytics. No ads. FEATURES SUMMARY - Formula browser organized by physics topic - Search by formula name, variable, or concept - Calculators for solving problems - Physical constants with precise values - Unit converter with 14 categories - Personal notes on any formula - Formula derivations and explanations - Related formulas and connections - Bookmarks for quick access - Search history - Dark and light themes - 100% offline functionality Built for physics students who want a reliable, ad-free reference that works anywhere. Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Thermodynamic Cycles and Physics Formulas are too close to call on the numbers: across 6 compared parameters โ price, update cadence, ads and in-app purchases among them โ neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.
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
Both are free to download. Thermodynamic Cycles sells 4 one-off in-app purchases and Physics Formulas sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.
Thermodynamic Cycles ships an update every 3 months, Physics Formulas every 2 months. The most recent releases landed on September 17, 2026 and September 11, 2026 respectively.
| Parameter | Thermodynamic Cycles | Physics Formulas |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Every 2 months โ better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod, Mac โ better | iPhone, iPad, iPod |
| Requires iOS | 15.0 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 50 MB | 38 MB |
| Age rating | 4+ | 4+ |
| Developer | Angus Malcolm | Mobin Akhter |
In-app purchases
Thermodynamic Cycles
- Gas Power Cycles$0.49
- Refrigeration Cycles$0.49
- Vapor Power Cycles$0.49
Show 1 moreShow fewer
- Unlock All$0.99
Physics Formulas
- Weekly Access$2.997 Days
- Lifetime Access$49.99
Questions
Is Thermodynamic Cycles free?
Is Physics Formulas free?
Do Thermodynamic Cycles or Physics Formulas have ads?
Which is updated more often, Thermodynamic Cycles or Physics Formulas?
Other comparisons















