Comparison

DWSIM Simulator vs Simple Harmonic Motion Calc

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

Head to head
About

DWSIM Simulator

This app provides a powerful offline chemical process simulation tool. It allows engineers to build complex process models, perform thermodynamic calculations, and analyze various unit operations. Features include a touch-enabled PFD interface, extensive compound databases, and advanced calculation engines.

Highlights
  • Offline chemical process simulation
  • Touch-enabled PFD drawing interface
  • Extensive thermodynamic models
  • Compound database for 1500+ compounds
  • Unit operation models
  • Chemical reaction and reactor support
  • Flowsheet parametric studies
Features
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DWSIM Simulator is a Steady-State Chemical Process Simulator, featuring: - Offline functionality: no need to connect to online databases or servers, DWSIM runs completely offline on your device, wherever you are! - Touch-enabled Process Flowsheet Diagram (PFD) Drawing Interface: A hardware-accelerated PFD interface with touch support allows Chemical Engineers to build complex process models in a few minutes - VLE/VLLE/SVLE/SVLLE calculations using Equation of State and Activity Coefficient models: calculate fluid properties and phase distribution with advanced thermodynamic models - Compound database with extensive data for more than 1500 compounds - Rigorous Thermodynamic Models*: PC-SAFT EOS, GERG-2008 EOS, Peng-Robinson EOS, Soave-Redlich-Kwong EOS, Lee-Kesler-Plöcker, Chao-Seader, Modified UNIFAC (Dortmund), UNIQUAC, NRTL, Wilson, Raoult's Law and IAPWS-IF97 Steam Tables - Thermophysical state (phase) properties: Enthalpy, Entropy, Internal Energy, Gibbs and Helmholtz Free Energies, Compressibility Factor, Isothermal Compressibility, Bulk Modulus, Speed of Sound, Joule-Thomson Expansion Coefficient, Density, Molecular Weight, Heat Capacity, Thermal Conductivity and Viscosity - Single-compound properties: Critical Parameters, Acentric Factor, Chemical formula, Structure formula, CAS Registry Number, Boiling Point Temperature, Vapor Pressure, Heat of Vaporization, Ideal gas Enthalpy, Ideal gas Enthalpy of Formation at 25 C, Ideal Gas Gibbs Free Energy of Formation at 25 C, Ideal Gas Entropy, Heat Capacity Cp, Ideal Gas Heat Capacity, Liquid Heat Capacity, Solid Heat Capacity, Heat Capacity Cv, Liquid Viscosity, Vapor Viscosity, Liquid Thermal Conductivity, Vapor Thermal Conductivity, Solid Density, Liquid Density and Molecular Weight - Comprehensive Unit Operation Model set*, including Mixer, Splitter, Separator, Pump, Compressor, Expander, Heater, Cooler, Valve, Shortcut Column, Heat Exchanger, Component Separator, Pipe Segment, Rigorous Distillation and Absorption Columns, Wind Turbine, Hydroelectric Turbine, Water Electrolyzer and Solar Panel - Support for Chemical Reactions and Reactors*: DWSIM features support for Conversion, Equilibrium and Kinetic reactions, together with their respective Reactor models - Flowsheet Parametric Studies: Use the Sensitivity Analysis Tool to run automated parametric studies on your process model; The Flowsheet Optimizer tool can bring the simulation to an optimum state according to user-defined criteria; The Calculator tool can read flowsheet variables, perform math operations on them and write the results back to the flowsheet - Petroleum Characterization: Bulk C7+ and TBP Distillation Curve characterization tools enable creation of pseudocompounds to simulate petroleum processing facilities - Parallel multicore CPU calculation engine: a fast and reliable flowsheet solver that takes advantage of the multicore CPUs on modern mobile devices - Save/Load XML simulation files on the device or in the cloud - Export simulation results to PDF and Text documents * Some items are available through in-app purchases ABOUT CHEMICAL PROCESS SIMULATION Chemical Process Simulation is a model-based representation of chemical, physical, biological, and other technical processes and unit operations in software. Basic prerequisites are a thorough knowledge of chemical and physical properties of pure components and mixtures, of reactions, and of mathematical models which, in combination, allow the calculation of a process in a computing device. Process simulation software describes processes in flow diagrams where unit operations are positioned and connected by product or educt streams. The software has to solve the mass and energy balance to find a stable operating point. The goal of a process simulation is to find optimal conditions for a process.

About

Simple Harmonic Motion Calc

This physics calculator quickly computes various parameters of simple harmonic motion, including amplitude, frequency, displacement, velocity, and acceleration. It supports high precision calculations and offers unit flexibility, making it a handy tool for students and professionals.

Highlights
  • Instant calculation of motion parameters
  • Copyable results
  • Included reference formulas
  • Supports 16 decimal places
  • Multiple unit support
  • Ad-free and private
Features
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Simple Harmonic Motion Calculator — a fast, accurate physics tool for solving displacement, velocity, and acceleration. Built for students, teachers, and engineers who need instant, reliable results. Enter amplitude, time, and phase, then choose angular frequency (ω), frequency (f), or period (T) — the app converts everything automatically and delivers real-time answers with beautiful, interactive graphs. KEY FEATURES • Instant x(t), v(t), and a(t) using the standard SHM equations: x(t) = A · cos(ωt + φ) v(t) = −Aω · sin(ωt + φ) a(t) = −Aω² · cos(ωt + φ) • Maximum velocity (Aω) and maximum acceleration (Aω²) computed automatically • Pick ω, f, or T as your input — values convert seamlessly • Configurable units for every quantity: meters, centimeters, kilometers, feet, inches, yards, miles, hertz, kilohertz, radians, degrees, revolutions, and more • SI / Metric and Imperial unit groups • Standard or Scientific notation display (e.g. 1.28 × 10⁻¹⁵) • Live equation view substitutes your numbers into each formula step by step • Interactive graph of displacement, velocity, and acceleration across one full oscillation • Zoom, pan, cursor tracking, and PNG export for lab reports or presentations • Built-in formula reference covering every SHM relation and symbol • Save calculations to a private local history — review, reload, or clear at any time • Dynamic Type and accessibility support • Offline app — no ads, no tracking, no internet required PERFECT FOR • Physics students studying mechanics, waves, oscillations, and harmonic motion • Teachers preparing worked examples and lecture material • Engineers analyzing springs, pendulums, vibration systems, and resonance • Anyone learning sinusoidal motion and harmonic analysis Simplify your next physics homework, lab report, or engineering analysis — download Simple Harmonic Motion Calculator today. Thanks for your support, and do visit nitrio.com for more apps for your iOS devices.

Screenshots

DWSIM Simulator4 screens
Simple Harmonic Motion Calc4 screens

Verdict

The call

The clearest difference is price: DWSIM Simulator at Free against Simple Harmonic Motion Calc's $2.99. DWSIM Simulator also leads on update cadence (every 6 weeks vs every 28 months) and ratings volume (105 vs 2). Simple Harmonic Motion Calc's advantage is in-app purchases (none vs 10) and rating (5.0 vs 4.6). On ads 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

DWSIM Simulator is free to download; Simple Harmonic Motion Calc costs $2.99 up front. DWSIM Simulator sells 10 one-off in-app purchases. Simple Harmonic Motion Calc asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Simple Harmonic Motion Calc holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: DWSIM Simulator has 105 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

DWSIM Simulator ships an update every 6 weeks, Simple Harmonic Motion Calc every 28 months. The most recent releases landed on October 1, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
DWSIM Simulator versus Simple Harmonic Motion Calc: the parameters behind the verdict, then further details
ParameterDWSIM SimulatorSimple Harmonic Motion Calc
PriceFree — better$2.99
Rating4.6 (105 ratings)5.0 (2 ratings) — better
Positive reviews57.1% of reviews—
Number of ratings105 — better2
Update frequencyEvery 6 weeks — betterEvery 28 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better17.6
Further details — not scored
Size106 MB1 MB
Age rating4+4+
DeveloperDaniel MedeirosNitrio

Customer experience

DWSIM Simulator

All ratings105 ratings
Positive91.4%
Neutral3.8%
Negative4.8%
Written reviews7 reviews
Positive57.1%
Neutral28.6%
Negative14.3%

Simple Harmonic Motion Calc

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

DWSIM Simulator

One-time10
  • User-Defined Unit Set$1.99
  • Flowsheet Utilities Pack$2.99
  • Unit Operations Pack 1$2.99
Show 7 more
  • Unit Operations Pack 2$2.99
  • Unit Operations Pack 3$2.99
  • Activity Coeff. Model Pack$3.99
  • Equation of State Model Pack$3.99
  • Reactor Models Pack$4.99
  • Unlock All Features$9.99
  • Unlock All Features$39.99
None

Simple Harmonic Motion Calc

No in-app purchases

Questions

Is DWSIM Simulator free?
DWSIM Simulator is free to download, with in-app purchases available.
Is Simple Harmonic Motion Calc free?
Simple Harmonic Motion Calc costs $2.99, with no in-app purchases.
Which has better reviews, DWSIM Simulator or Simple Harmonic Motion Calc?
Simple Harmonic Motion Calc is rated higher. DWSIM Simulator averages 4.6 out of 5 from 105 ratings, while Simple Harmonic Motion Calc averages 5.0 from 2 ratings.
Do DWSIM Simulator or Simple Harmonic Motion Calc have ads?
Neither DWSIM Simulator nor Simple Harmonic Motion Calc shows ads.
Which is updated more often, DWSIM Simulator or Simple Harmonic Motion Calc?
DWSIM Simulator ships an update every 6 weeks, and Simple Harmonic Motion Calc every 28 months. Most recently, DWSIM Simulator was updated on October 1, 2026 and Simple Harmonic Motion Calc on September 24, 2026.

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