DWSIM Simulator vs ProEngineer Calculator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide full description
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.
ProEngineer Calculator
This app provides engineers and students with a comprehensive suite of tools for complex calculations across various engineering disciplines. It offers features for stoichiometry, thermodynamics, electrical, and fluid mechanics, along with process visualization and project management aids.
- Stoichiometry & Material Balances
- Thermodynamics Calculations
- Electrical Calculations
- Flow Mechanics Calculator
- Process Timeline
- Consultant Directory
Read full descriptionHide full description
ProEngineer Calculator — Your Comprehensive Engineering Companion Engineered for professional engineers and engineering students alike, ProEngineering Calculator combines powerful tools and practical resources to tackle complex calculations and process management with ease. From chemical stoichiometry to electrical and flow mechanics, this app is built to optimize accuracy and efficiency in all your engineering tasks. Features that Empower Your Engineering Work: Stoichiometry & Material Balances: Perform precise chemical reaction and mass flow calculations for process design and analysis. Thermodynamics Calculations: Access essential formulas for heat transfer, energy balances, and thermodynamic properties. Process Flow Diagram (PFD) Reference: Visualize and reference standardized PFD symbols and conventions within the app. Electrical Calculations: Solve electrical circuit problems and perform power, voltage, and current assessments. Flow Mechanics Calculator: Analyze fluid flow, pressure drops, pump performance, and piping systems accurately. Process Timeline: Organize and plan process stages with clear, visual timelines. Consultant Directory: Locate and connect with industry experts to support your projects. Intuitive Interface: Designed for quick data input and immediate results — perfect for both on-site work and office environments. ProEngineering Calculator is an essential engineering toolkit for professionals in chemical, mechanical, process, and electrical engineering fields. Boost your productivity, minimize errors, and take your engineering projects to the next level. Download now to make engineering smarter, faster, and easier.
Screenshots
Verdict
The clearest difference is price: DWSIM Simulator at Free against ProEngineer Calculator's $19.99. DWSIM Simulator also leads on ratings volume (105 vs 1) and iOS requirement (12.0 vs 15.1). ProEngineer Calculator's advantage is review sentiment (100% vs 57%) and in-app purchases (none vs 10). On update cadence, 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
DWSIM Simulator is free to download; ProEngineer Calculator costs $19.99 up front. DWSIM Simulator sells 10 one-off in-app purchases. ProEngineer Calculator asks for nothing beyond the download.
ProEngineer Calculator 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 1, so its average is the more settled of the two. Written reviews point the same way: 57% of DWSIM Simulator's written reviews are positive against 100% of ProEngineer Calculator's.
DWSIM Simulator ships an update every 6 weeks, ProEngineer Calculator monthly. The most recent releases landed on September 13, 2026 and August 14, 2026 respectively.
| Parameter | DWSIM Simulator | ProEngineer Calculator |
|---|---|---|
| Price | Free — better | $19.99 |
| Rating | 4.6 (105 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 57.1% of reviews | 100.0% of reviews — better |
| Number of ratings | 105 — better | 1 |
| Update frequency | Every 6 weeks | Monthly — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 106 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Medeiros | Margaret Hayes |
Customer experience
DWSIM Simulator
ProEngineer Calculator
In-app purchases
DWSIM Simulator
- User-Defined Unit Set$1.99
- Flowsheet Utilities Pack$2.99
- Unit Operations Pack 1$2.99
Show 7 moreShow fewer
- 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
ProEngineer Calculator
No in-app purchases
Questions
Is DWSIM Simulator free?
Is ProEngineer Calculator free?
Which has better reviews, DWSIM Simulator or ProEngineer Calculator?
Do DWSIM Simulator or ProEngineer Calculator have ads?
Which is updated more often, DWSIM Simulator or ProEngineer Calculator?
Other comparisons















