Comparison

Thermodynamics Calculator vs DEGraphBlue

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Thermodynamics Calculator

This app offers 44 essential thermodynamics calculators and thermal engineering tables. It provides quick access to formulas, definitions, and data, making it a valuable tool for engineers and students.

Highlights
  • 44 thermodynamics calculators
  • Thermal engineering tables
  • Formulas, tables, and definitions
  • Compatible with iPhone and iPad
  • Quick and easy reference
Features
Read full description

Thermodynamics Calculator puts 44 thermodynamics and heat-transfer calculators — plus a library of thermal engineering reference tables — in one fast, offline app for engineers and students. Sizing a heat exchanger, checking a Carnot efficiency, or looking up the emissivity of a material? You get the formula, the result, and the reference data in seconds. WHY ENGINEERS USE IT • Solve for any variable — on most calculators, rearrange the formula and solve for whichever value you're missing, not just the "standard" output. • SI and USCS (Imperial) units — switch the whole app between metric and imperial with one tap; every input, result, and unit label updates instantly. • Reference tables built in — emissivity coefficients, thermal conductivity of common liquids and heat-exchanger materials, radiation constants, and more. • Find it fast — search plus category filters: Heat Transfer, Thermal Expansion, Radiation, Energy & Work, Dimensionless Numbers, Properties & Tables. WHO IT'S FOR Mechanical, chemical, and HVAC engineers, and thermodynamics / heat-transfer students who want quick, reliable answers without digging through a textbook. ALL 44 CALCULATORS List of Calculators: 1. Carnot Efficiency (Carnot Cycle) 2. Eckert Number 3. Emissivity Coefficient 4. Energy Efficiency 5. Energy/Work Converter 6. Enthalpy 7. Entropy 8. Fick’s Law of Diffusion 9. Fouling Factor 10. Fourier Number 11. Heat Flow 12. Heat Storage 13. Heat Transfer Rate 14. Kinetic Energy 15. Laws of Thermodynamics 16. Lewis Number 17. Liquid Phase Diffusion Coefficient 18. Nusselt Number 19. Peclet Number 20. Potential Energy 21. Prandtl Number 22. Radiation Constant 23. Radiation Converter 24. Radiation Heat Transfer 25. Rankine Efficiency 26. Sherwood Number 27. Specific Heat Capacity Calculator 28. Specific Heat Capacity Converter 29. Stefan-Boltzmann Law 30. Surface Absorptivity 31. Temperature Converter 32. Thermal Area Expansion 33. Thermal Conductivity (Common Liquids) 34. Thermal Conductivity (Heat Exchanger Materials) 35. Thermal Conductivity Calculator 36. Thermal Conductivity Converter 37. Thermal Diffusivity 38. Thermal Expansion Converter 39. Thermal Linear & Volumetric Expansion Relationship 40. Thermal Linear Expansion 41. Thermal Resistivity 42. Thermal Transmittance 43. Thermal Volumetric Expansion 44. Work Ideal for mechanical engineers and students!

About

DEGraphBlue

Features
Read full description

App for temperature measurement via measuring device P700/P755/P770/P790 with Bluetooth! - Graphical and tabular recording of measured values every second - Save and further process measured values in standard file formats - Alert in case of value limit violation - Measured value stabilization function for calibration laboratories - Control various measuring instrument functions via App

Screenshots

Thermodynamics Calculator4 screens
DEGraphBlue1 screens

Verdict

The call

The clearest difference is price: DEGraphBlue at Free against Thermodynamics Calculator's $1.99. Thermodynamics Calculator's advantage is update cadence (every 7 months vs every 39 months). On ads, in-app purchases, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

DEGraphBlue is free to download; Thermodynamics Calculator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Thermodynamics Calculator ships an update every 7 months, DEGraphBlue every 39 months. The most recent releases landed on September 18, 2026 and September 10, 2026 respectively.

Scorecard2 real differences · 8 level
Thermodynamics Calculator versus DEGraphBlue: the parameters behind the verdict, then further details
ParameterThermodynamics CalculatorDEGraphBlue
Price$1.99Free — better
Rating4.0 (30 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings30 — better—
Update frequencyEvery 7 months — betterEvery 39 months
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.115.6 — better
Further details — not scored
Size11 MB4 MB
Age rating+44+
DeveloperV PUGAZHENTHIDostmann electronic GmbH

In-app purchases

None

Thermodynamics Calculator

No in-app purchases

None

DEGraphBlue

No in-app purchases

Questions

Is Thermodynamics Calculator free?
Thermodynamics Calculator costs $1.99, with no in-app purchases.
Is DEGraphBlue free?
DEGraphBlue is free to download, with no in-app purchases.
Do Thermodynamics Calculator or DEGraphBlue have ads?
Neither Thermodynamics Calculator nor DEGraphBlue shows ads.
Which is updated more often, Thermodynamics Calculator or DEGraphBlue?
Thermodynamics Calculator ships an update every 7 months, and DEGraphBlue every 39 months. Most recently, Thermodynamics Calculator was updated on September 18, 2026 and DEGraphBlue on September 10, 2026.

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