Comparison

Mohr's Circle vs Steam Tables Pro

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

Head to head
About

Mohr's Circle

This application assists users in performing Mohr's Circle calculations and verifying their diagrams. It offers solutions for 2D plane stress, calculates various stress values, and generates graphical representations of stress states. Users can also share results and store multiple stress states.

Highlights
  • 2D Plane Stress Mohr's Circle Solutions
  • Max, Min, and Shear Stress Calculations
  • Principal Stress Plane Angle
  • Mohr's Circle Diagram
  • Stress State Rotation Views
  • Shareable Results
  • Unit Conversion (English/Metric)
Features
Currently charting
Read full description

Do you need to perform a Mohr's Circle calculation? Would you like to make sure you Mohr's Circle diagram is correct? With the power of your iOS device and this app, you can do this quickly and easily. (5 Stars) "Perfect…Great tool, great app!" -The fever, the focus Mohr's Circle Calculates: ● 2D Plane Stress Mohr's Circle Solutions ● Max Stress ● Min Stress ● Max Shear Stress ● Average Stress ● Principal Stress Plane Angle ● Max Shear Stress Plane Angle ● The normal stress at an arbitrary angle ● The tangential stress at an arbitrary angle ● The shear stress at an arbitrary angle Mohr's Circle Graphs 4 Views Including: ● Mohr's Circle Diagram ● Stress State Rotated to the Principal Stress Plane ● Stress State Rotated to the Max Shear Stress Plane ● Stress State Rotated to an arbitrary angle Mohr's Circle Features: ● Universal App (Designed for both the iPhone and iPad) ● Share your results via a printout or email ● View the equations used to calculate the results ● Store as many stress states as you want for future reference Units Included! Independently set input and output units both English and Metric. Check out our other engineering apps by searching the App Store for: • Pressure Vessel Pro • Moments of Inertia • Stress Concentrations Pro • Stress Intensity Factors Pro or search J.R.Hobbs to see them all. AppStore.com/JRHobbs

About

Steam Tables Pro

This app calculates a comprehensive range of thermodynamic properties for steam using the IAPWS-97 equations. It allows calculations based on various input parameters like pressure, temperature, enthalpy, entropy, and quality, and displays results in charts.

Highlights
  • Calculates properties from pressure and temperature
  • Calculates properties from pressure and enthalpy
  • Calculates properties from pressure and entropy
  • Calculates properties from pressure and quality
  • Calculates properties from saturated temperature and quality
  • Calculates properties from enthalpy and entropy
  • Displays results in T-s, P-h, and H-s charts
  • Supports multiple units
Features
Read full description

Steam Tables calculates the functions below, using the IAPWS-97 equations: •Function(p,t) – to calculate properties from pressure and temperature; •Function(p,h) – to calculate properties from pressure and enthalpy; •Function(p,s) – to calculate properties from pressure and entropy; •Function(Psat,x) – to calculate properties from pressure and quality, for saturated steam and liquid and two fases; •Function(Tsat,x) – to calculate properties from saturated temperature and quality, for saturated steam and liquid and two fases; •Function(h,s) – to calculate properties from entalpy and entropy. From the functions above, you can calculate quickly the properties below: MAIN THERMODYNAMIC PROPERTIES: •Pressure; •Temperature; •Enthalpy; •Entropy; •Vapor Fraction; •Specific Volume; •Internal Energy; •Density; •Region; OTHER THERMODYNAMICA PROPERTIES: •Specific Isobaric Heat Capacity (Cp); •Specific Isochoric Heat Capacity (Cv); •Speed of Sound; •Kappa; •Vapor Volume Fraction. TRANSPORT PROPERTIES: •Dynamic Viscosity; •Kinematic Viscosity; •Prandtl; •Surface Tension; •Thermal Conductivity. MORE •Record the results •See the Records in the Chart T-s, P-h and H-s. •Multiple units. The best thermodynamic properties calculator on the App Store!!!!!

Screenshots

Mohr's Circle4 screens
Steam Tables Pro4 screens

Verdict

The call

The clearest difference is update cadence: Steam Tables Pro at every 2 months against Mohr's Circle's every 15 months. Steam Tables Pro also leads on price ($4.99 vs $5.99). Mohr's Circle's advantage is review sentiment (43% vs 26%) and chart position (#191 vs unranked). On ads, in-app purchases, monetization model and device support 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

Mohr's Circle costs $5.99 and Steam Tables Pro $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Mohr's Circle ships an update every 15 months, Steam Tables Pro every 2 months. Both last shipped on September 16, 2026.

Scorecard5 real differences · 6 level
Mohr's Circle versus Steam Tables Pro: the parameters behind the verdict, then further details
ParameterMohr's CircleSteam Tables Pro
Price$5.99$4.99 — better
Rating3.3 (3 ratings) — better—
Positive reviews42.9% of reviews — better26.1% of reviews
Number of ratings3 — better—
Update frequencyEvery 15 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
Best chart rank#191 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size8 MB30 MB
Age rating4+4+
DeveloperJ.R.HobbsEduardo Almeida

Customer experience

Mohr's Circle

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews7 reviews
Positive42.9%
Neutral28.6%
Negative28.6%

Steam Tables Pro

Written reviews23 reviews
Positive26.1%
Neutral4.3%
Negative69.6%

In-app purchases

None

Mohr's Circle

No in-app purchases

None

Steam Tables Pro

No in-app purchases

Questions

Is Mohr's Circle free?
Mohr's Circle costs $5.99, with no in-app purchases.
Is Steam Tables Pro free?
Steam Tables Pro costs $4.99, with no in-app purchases.
Do Mohr's Circle or Steam Tables Pro have ads?
Neither Mohr's Circle nor Steam Tables Pro shows ads.
Which is updated more often, Mohr's Circle or Steam Tables Pro?
Mohr's Circle ships an update every 15 months, and Steam Tables Pro every 2 months. Most recently, Mohr's Circle was updated on September 16, 2026 and Steam Tables Pro on September 16, 2026.

Other comparisons